<status value="draft" /> <date value="2025-07-21" /> <publisher value="NHS England" /> <contact> <name value="NHS England" /> <telecom> <system value="email" /> <value value="interoperabilityteam@nhs.net" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <description value="The Organization Endpoint Order extension is used to provide a priority ranking for endpoints associated with an Organization resource, allowing systems to determine the preferred order of endpoint usage." /> <purpose value="This extension is a Directory of Service (DoS) use case, Enables prioritization of multiple endpoints for an Organization, supporting scenarios where organizations have multiple communication channels or services that need to be accessed in a specific order of preference." /> <copyright value="Copyright © 2025+ HL7 UK Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7® FHIR® standard Copyright © 2011+ HL7 The HL7® FHIR® standard is used under the FHIR license. You may obtain a copy of the FHIR license at https://www.hl7.org/fhir/license.html." /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Endpoint" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <max value="1" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://fhir.nhs.uk/England/StructureDefinition/Extension-England-OrganizationEndpointOrder" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <short value="Priority order for the endpoint" /> <definition value="An integer value representing the priority order of this endpoint relative to other endpoints for the same organization. Lower numbers indicate higher priority (e.g., 1 = highest priority, 2 = second priority, etc.)." /> <min value="1" /> <type> <code value="integer" /> </type> <constraint> <key value="nhse-endp-001" /> <severity value="error" /> <human value="Endpoint order must be a positive integer" /> <expression value="value.integer > 0" /> </constraint> </element> </differential> </StructureDefinition>