Name Flags Card. Type Description & Constraints doco
. . Group 0 .. * CPGGroupDefinition Group of multiple entities
. . . identifier S 1..* Identifier Unique id
. . . . use S 1..1 code usual | official | temp | secondary | old (If known)
. . . . system S 1..1 uri The namespace for the identifier value
. . . . value S 1..1 string The value that is unique
. . . active S 1..1 boolean Whether this group's record is in active use

doco Documentation for this format
<status value="draft" /> <experimental value="false" /> <date value="2021-09-01T04:24:37+00:00" /> <publisher value="World Health Organization (WHO)" /> <contact> <telecom> <system value="url" /> <value value="https://www.who.int" /> </telecom> </contact> <description value="WHO Group Definition" /> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm" /> <code value="001" /> </coding> </jurisdiction> <fhirVersion value="4.0.1" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <mapping> <identity value="w5" /> <uri value="http://hl7.org/fhir/fivews" /> <name value="FiveWs Pattern Mapping" /> </mapping> <kind value="resource" /> <abstract value="false" /> <type value="Group" /> <baseDefinition value="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-groupdefinition" /> <derivation value="constraint" /> <differential> <element id="Group"> <path value="Group" /> <mustSupport value="false" /> </element> <element id="Group.identifier"> <path value="Group.identifier" /> <min value="1" /> <max value="*" /> <mustSupport value="true" /> </element> <element id="Group.identifier.use"> <path value="Group.identifier.use" /> <min value="1" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="Group.identifier.system"> <path value="Group.identifier.system" /> <min value="1" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="Group.identifier.value"> <path value="Group.identifier.value" /> <min value="1" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="Group.active"> <path value="Group.active" /> <min value="1" /> <max value="1" /> <mustSupport value="true" /> </element> </differential> </StructureDefinition>