<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://fhir.nhs.uk/StructureDefinition/England-Parameters-SubscriptionStatus" />
  <name value="EnglandParametersSubscriptionStatus" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Parameters" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Parameters" />
  <derivation value="constraint" />
  <snapshot>
    <element id="Parameters">
      <path value="Parameters" />
      <short value="This is based on R4 SubscriptionStatus" />
      <definition value="See http://hl7.org/fhir/5.0.0-snapshot1/subscriptionstatus.html" />
      <comment value="The parameters that may be used are defined by the OperationDefinition resource." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters" />
        <min value="0" />
        <max value="*" />
      </base>
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
      <mapping>
        <identity value="v2" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.id">
      <path value="Parameters.id" />
      <short value="Logical id of this artifact" />
      <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes." />
      <comment value="The only time that a resource does not have an id is when it is being submitted to the server using a create operation." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Resource.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <isSummary value="true" />
    </element>
    <element id="Parameters.meta">
      <path value="Parameters.meta" />
      <short value="Metadata about the resource" />
      <definition value="The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Resource.meta" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Meta" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.implicitRules">
      <path value="Parameters.implicitRules" />
      <short value="A set of rules under which this content was created" />
      <definition value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc." />
      <comment value="Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Resource.implicitRules" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="uri" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.language">
      <path value="Parameters.language" />
      <short value="Language of the resource content" />
      <definition value="The base language in which the resource is written." />
      <comment value="Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies  to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute)." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Resource.language" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="code" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
          <valueCanonical value="http://hl7.org/fhir/ValueSet/all-languages" />
        </extension>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="Language" />
        </extension>
        <strength value="preferred" />
        <description value="A human language." />
        <valueSet value="http://hl7.org/fhir/ValueSet/languages" />
      </binding>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter">
      <path value="Parameters.parameter" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="name" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <short value="Operation Parameter" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="base64Binary" />
      </type>
      <type>
        <code value="boolean" />
      </type>
      <type>
        <code value="canonical" />
      </type>
      <type>
        <code value="code" />
      </type>
      <type>
        <code value="date" />
      </type>
      <type>
        <code value="dateTime" />
      </type>
      <type>
        <code value="decimal" />
      </type>
      <type>
        <code value="id" />
      </type>
      <type>
        <code value="instant" />
      </type>
      <type>
        <code value="integer" />
      </type>
      <type>
        <code value="markdown" />
      </type>
      <type>
        <code value="oid" />
      </type>
      <type>
        <code value="positiveInt" />
      </type>
      <type>
        <code value="string" />
      </type>
      <type>
        <code value="time" />
      </type>
      <type>
        <code value="unsignedInt" />
      </type>
      <type>
        <code value="uri" />
      </type>
      <type>
        <code value="url" />
      </type>
      <type>
        <code value="uuid" />
      </type>
      <type>
        <code value="Address" />
      </type>
      <type>
        <code value="Age" />
      </type>
      <type>
        <code value="Annotation" />
      </type>
      <type>
        <code value="Attachment" />
      </type>
      <type>
        <code value="CodeableConcept" />
      </type>
      <type>
        <code value="Coding" />
      </type>
      <type>
        <code value="ContactPoint" />
      </type>
      <type>
        <code value="Count" />
      </type>
      <type>
        <code value="Distance" />
      </type>
      <type>
        <code value="Duration" />
      </type>
      <type>
        <code value="HumanName" />
      </type>
      <type>
        <code value="Identifier" />
      </type>
      <type>
        <code value="Money" />
      </type>
      <type>
        <code value="Period" />
      </type>
      <type>
        <code value="Quantity" />
      </type>
      <type>
        <code value="Range" />
      </type>
      <type>
        <code value="Ratio" />
      </type>
      <type>
        <code value="Reference" />
      </type>
      <type>
        <code value="SampledData" />
      </type>
      <type>
        <code value="Signature" />
      </type>
      <type>
        <code value="Timing" />
      </type>
      <type>
        <code value="ContactDetail" />
      </type>
      <type>
        <code value="Contributor" />
      </type>
      <type>
        <code value="DataRequirement" />
      </type>
      <type>
        <code value="Expression" />
      </type>
      <type>
        <code value="ParameterDefinition" />
      </type>
      <type>
        <code value="RelatedArtifact" />
      </type>
      <type>
        <code value="TriggerDefinition" />
      </type>
      <type>
        <code value="UsageContext" />
      </type>
      <type>
        <code value="Dosage" />
      </type>
      <type>
        <code value="Meta" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter.part">
      <path value="Parameters.parameter.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:status">
      <path value="Parameters.parameter" />
      <sliceName value="status" />
      <short value="requested | active | error | off | entered-in-error" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="status" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="code" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:status.part">
      <path value="Parameters.parameter.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent">
      <path value="Parameters.parameter" />
      <sliceName value="notificationEvent" />
      <short value="Detailed information about any events relevant to this notification" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="1" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="notificationEvent" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="base64Binary" />
      </type>
      <type>
        <code value="boolean" />
      </type>
      <type>
        <code value="canonical" />
      </type>
      <type>
        <code value="code" />
      </type>
      <type>
        <code value="date" />
      </type>
      <type>
        <code value="dateTime" />
      </type>
      <type>
        <code value="decimal" />
      </type>
      <type>
        <code value="id" />
      </type>
      <type>
        <code value="instant" />
      </type>
      <type>
        <code value="integer" />
      </type>
      <type>
        <code value="markdown" />
      </type>
      <type>
        <code value="oid" />
      </type>
      <type>
        <code value="positiveInt" />
      </type>
      <type>
        <code value="string" />
      </type>
      <type>
        <code value="time" />
      </type>
      <type>
        <code value="unsignedInt" />
      </type>
      <type>
        <code value="uri" />
      </type>
      <type>
        <code value="url" />
      </type>
      <type>
        <code value="uuid" />
      </type>
      <type>
        <code value="Address" />
      </type>
      <type>
        <code value="Age" />
      </type>
      <type>
        <code value="Annotation" />
      </type>
      <type>
        <code value="Attachment" />
      </type>
      <type>
        <code value="CodeableConcept" />
      </type>
      <type>
        <code value="Coding" />
      </type>
      <type>
        <code value="ContactPoint" />
      </type>
      <type>
        <code value="Count" />
      </type>
      <type>
        <code value="Distance" />
      </type>
      <type>
        <code value="Duration" />
      </type>
      <type>
        <code value="HumanName" />
      </type>
      <type>
        <code value="Identifier" />
      </type>
      <type>
        <code value="Money" />
      </type>
      <type>
        <code value="Period" />
      </type>
      <type>
        <code value="Quantity" />
      </type>
      <type>
        <code value="Range" />
      </type>
      <type>
        <code value="Ratio" />
      </type>
      <type>
        <code value="Reference" />
      </type>
      <type>
        <code value="SampledData" />
      </type>
      <type>
        <code value="Signature" />
      </type>
      <type>
        <code value="Timing" />
      </type>
      <type>
        <code value="ContactDetail" />
      </type>
      <type>
        <code value="Contributor" />
      </type>
      <type>
        <code value="DataRequirement" />
      </type>
      <type>
        <code value="Expression" />
      </type>
      <type>
        <code value="ParameterDefinition" />
      </type>
      <type>
        <code value="RelatedArtifact" />
      </type>
      <type>
        <code value="TriggerDefinition" />
      </type>
      <type>
        <code value="UsageContext" />
      </type>
      <type>
        <code value="Dosage" />
      </type>
      <type>
        <code value="Meta" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part">
      <path value="Parameters.parameter.part" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="name" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp">
      <path value="Parameters.parameter.part" />
      <sliceName value="timestamp" />
      <short value="The instant this event occurred" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.id">
      <path value="Parameters.parameter.part.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.extension">
      <path value="Parameters.parameter.part.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.modifierExtension">
      <path value="Parameters.parameter.part.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.name">
      <path value="Parameters.parameter.part.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="timestamp" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="instant" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.resource">
      <path value="Parameters.parameter.part.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.part">
      <path value="Parameters.parameter.part.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus">
      <path value="Parameters.parameter.part" />
      <sliceName value="focus" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.id">
      <path value="Parameters.parameter.part.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.extension">
      <path value="Parameters.parameter.part.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.modifierExtension">
      <path value="Parameters.parameter.part.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.name">
      <path value="Parameters.parameter.part.name" />
      <short value="The focus of this event" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="focus" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Reference" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.resource">
      <path value="Parameters.parameter.part.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.part">
      <path value="Parameters.parameter.part.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext">
      <path value="Parameters.parameter.part" />
      <sliceName value="additionalContext" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.id">
      <path value="Parameters.parameter.part.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.extension">
      <path value="Parameters.parameter.part.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.modifierExtension">
      <path value="Parameters.parameter.part.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.name">
      <path value="Parameters.parameter.part.name" />
      <short value="The additionalContext of this event" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="additionalContext" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Reference" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.resource">
      <path value="Parameters.parameter.part.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.part">
      <path value="Parameters.parameter.part.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber">
      <path value="Parameters.parameter.part" />
      <sliceName value="eventNumber" />
      <short value="Event number" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.id">
      <path value="Parameters.parameter.part.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.extension">
      <path value="Parameters.parameter.part.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.modifierExtension">
      <path value="Parameters.parameter.part.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.name">
      <path value="Parameters.parameter.part.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="eventNumber" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="integer" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.resource">
      <path value="Parameters.parameter.part.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.part">
      <path value="Parameters.parameter.part.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:subscription">
      <path value="Parameters.parameter" />
      <sliceName value="subscription" />
      <short value="Reference to the Subscription responsible for this notification" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="subscription" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Reference" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:subscription.part">
      <path value="Parameters.parameter.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="0" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:topic">
      <path value="Parameters.parameter" />
      <sliceName value="topic" />
      <short value="Reference to the SubscriptionTopic this notification relates to" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="topic" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="canonical" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:topic.part">
      <path value="Parameters.parameter.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
    <element id="Parameters.parameter:error">
      <path value="Parameters.parameter" />
      <sliceName value="error" />
      <short value="Operation Parameter" />
      <definition value="A parameter passed to or received from the operation." />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Parameters.parameter" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="BackboneElement" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="inv-1" />
        <severity value="error" />
        <human value="A parameter must have one and only one of (value, resource, part)" />
        <expression value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))" />
        <xpath value="(exists(f:resource) or exists(f:part) or exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:resource))) and not(exists(f:*[starts-with(local-name(.), 'value')])) and exists(f:part))) and not(exists(f:part) and exists(f:resource))" />
        <source value="http://hl7.org/fhir/StructureDefinition/Parameters" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.id">
      <path value="Parameters.parameter.id" />
      <representation value="xmlAttr" />
      <short value="Unique id for inter-element referencing" />
      <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Element.id" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string" />
        </extension>
        <code value="http://hl7.org/fhirpath/System.String" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.extension">
      <path value="Parameters.parameter.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <description value="Extensions are always sliced by (at least) url" />
        <rules value="open" />
      </slicing>
      <short value="Additional content defined by implementations" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <alias value="extensions" />
      <alias value="user content" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="Element.extension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.modifierExtension">
      <path value="Parameters.parameter.modifierExtension" />
      <short value="Extensions that cannot be ignored even if unrecognized" />
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)." />
      <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." />
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension)." />
      <alias value="extensions" />
      <alias value="user content" />
      <alias value="modifiers" />
      <min value="0" />
      <max value="*" />
      <base>
        <path value="BackboneElement.modifierExtension" />
        <min value="0" />
        <max value="*" />
      </base>
      <type>
        <code value="Extension" />
      </type>
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
        <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
      </constraint>
      <isModifier value="true" />
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.name">
      <path value="Parameters.parameter.name" />
      <short value="Name from the definition" />
      <definition value="The name of the parameter (reference to the operation definition)." />
      <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.name" />
        <min value="1" />
        <max value="1" />
      </base>
      <type>
        <code value="string" />
      </type>
      <fixedString value="error" />
      <condition value="ele-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <short value="If parameter is a data type" />
      <definition value="If the parameter is a data type." />
      <min value="1" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.value[x]" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="CodeableConcept" />
      </type>
      <condition value="ele-1" />
      <condition value="inv-1" />
      <constraint>
        <key value="ele-1" />
        <severity value="error" />
        <human value="All FHIR elements must have a @value or children" />
        <expression value="hasValue() or (children().count() &gt; id.count())" />
        <xpath value="@value|f:*|h:div" />
        <source value="http://hl7.org/fhir/StructureDefinition/Element" />
      </constraint>
      <isSummary value="true" />
      <binding>
        <strength value="example" />
        <valueSet value="http://hl7.org/fhir/ValueSet/subscription-error" />
      </binding>
      <mapping>
        <identity value="rim" />
        <map value="n/a" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.resource">
      <path value="Parameters.parameter.resource" />
      <short value="If parameter is a whole resource" />
      <definition value="If the parameter is a whole resource." />
      <comment value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods." />
      <min value="0" />
      <max value="1" />
      <base>
        <path value="Parameters.parameter.resource" />
        <min value="0" />
        <max value="1" />
      </base>
      <type>
        <code value="Resource" />
      </type>
      <condition value="inv-1" />
      <isSummary value="true" />
      <mapping>
        <identity value="rim" />
        <map value="Entity. Role, or Act" />
      </mapping>
    </element>
    <element id="Parameters.parameter:error.part">
      <path value="Parameters.parameter.part" />
      <short value="Named part of a multi-part parameter" />
      <definition value="A named part of a multi-part parameter." />
      <comment value="Only one level of nested parameters is allowed." />
      <min value="0" />
      <max value="0" />
      <base>
        <path value="Parameters.parameter.part" />
        <min value="0" />
        <max value="*" />
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
      <isSummary value="true" />
    </element>
  </snapshot>
  <differential>
    <element id="Parameters">
      <path value="Parameters" />
      <short value="This is based on R4 SubscriptionStatus" />
      <definition value="See http://hl7.org/fhir/5.0.0-snapshot1/subscriptionstatus.html" />
    </element>
    <element id="Parameters.parameter">
      <path value="Parameters.parameter" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="name" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Parameters.parameter:status">
      <path value="Parameters.parameter" />
      <sliceName value="status" />
      <short value="requested | active | error | off | entered-in-error" />
    </element>
    <element id="Parameters.parameter:status.name">
      <path value="Parameters.parameter.name" />
      <fixedString value="status" />
    </element>
    <element id="Parameters.parameter:status.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <min value="1" />
      <type>
        <code value="code" />
      </type>
    </element>
    <element id="Parameters.parameter:status.part">
      <path value="Parameters.parameter.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent">
      <path value="Parameters.parameter" />
      <sliceName value="notificationEvent" />
      <short value="Detailed information about any events relevant to this notification" />
      <min value="1" />
    </element>
    <element id="Parameters.parameter:notificationEvent.name">
      <path value="Parameters.parameter.name" />
      <fixedString value="notificationEvent" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part">
      <path value="Parameters.parameter.part" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="name" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp">
      <path value="Parameters.parameter.part" />
      <sliceName value="timestamp" />
      <short value="The instant this event occurred" />
      <max value="1" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.name">
      <path value="Parameters.parameter.part.name" />
      <fixedString value="timestamp" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <min value="1" />
      <type>
        <code value="instant" />
      </type>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:timestamp.part">
      <path value="Parameters.parameter.part.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus">
      <path value="Parameters.parameter.part" />
      <sliceName value="focus" />
      <min value="1" />
      <max value="1" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.name">
      <path value="Parameters.parameter.part.name" />
      <short value="The focus of this event" />
      <fixedString value="focus" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <min value="1" />
      <type>
        <code value="Reference" />
      </type>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:focus.part">
      <path value="Parameters.parameter.part.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext">
      <path value="Parameters.parameter.part" />
      <sliceName value="additionalContext" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.name">
      <path value="Parameters.parameter.part.name" />
      <short value="The additionalContext of this event" />
      <fixedString value="additionalContext" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <min value="1" />
      <type>
        <code value="Reference" />
      </type>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:additionalContext.part">
      <path value="Parameters.parameter.part.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber">
      <path value="Parameters.parameter.part" />
      <sliceName value="eventNumber" />
      <short value="Event number" />
      <min value="1" />
      <max value="1" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.name">
      <path value="Parameters.parameter.part.name" />
      <fixedString value="eventNumber" />
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.value[x]">
      <path value="Parameters.parameter.part.value[x]" />
      <min value="1" />
      <type>
        <code value="integer" />
      </type>
    </element>
    <element id="Parameters.parameter:notificationEvent.part:eventNumber.part">
      <path value="Parameters.parameter.part.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:subscription">
      <path value="Parameters.parameter" />
      <sliceName value="subscription" />
      <short value="Reference to the Subscription responsible for this notification" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Parameters.parameter:subscription.name">
      <path value="Parameters.parameter.name" />
      <fixedString value="subscription" />
    </element>
    <element id="Parameters.parameter:subscription.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <min value="1" />
      <type>
        <code value="Reference" />
      </type>
    </element>
    <element id="Parameters.parameter:subscription.part">
      <path value="Parameters.parameter.part" />
      <max value="0" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:topic">
      <path value="Parameters.parameter" />
      <sliceName value="topic" />
      <short value="Reference to the SubscriptionTopic this notification relates to" />
      <max value="1" />
    </element>
    <element id="Parameters.parameter:topic.name">
      <path value="Parameters.parameter.name" />
      <fixedString value="topic" />
    </element>
    <element id="Parameters.parameter:topic.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <min value="1" />
      <type>
        <code value="canonical" />
      </type>
    </element>
    <element id="Parameters.parameter:topic.part">
      <path value="Parameters.parameter.part" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
    <element id="Parameters.parameter:error">
      <path value="Parameters.parameter" />
      <sliceName value="error" />
    </element>
    <element id="Parameters.parameter:error.name">
      <path value="Parameters.parameter.name" />
      <fixedString value="error" />
    </element>
    <element id="Parameters.parameter:error.value[x]">
      <path value="Parameters.parameter.value[x]" />
      <min value="1" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="example" />
        <valueSet value="http://hl7.org/fhir/ValueSet/subscription-error" />
      </binding>
    </element>
    <element id="Parameters.parameter:error.part">
      <path value="Parameters.parameter.part" />
      <max value="0" />
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter" />
    </element>
  </differential>
</StructureDefinition>