description: This cross-version extension represents AuditEvent.entity.identifier from http://hl7.org/fhir/StructureDefinition/AuditEvent|3.0.2 for use in FHIR R4B. package_name: rs/hl7.fhir.uv.xver derivation: constraint name: ext_R3_AuditEvent_en_identifier type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Specific instance of object choices: [valueIdentifier] index: 1 valueIdentifier: base: {path: 'Extension.value[x]'} type: Identifier short: Specific instance of object choiceOf: value index: 2 url: pattern: {type: uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-AuditEvent.entity.identifier'} type: uri index: 3 package_version: r3.r4b-0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/3.0/StructureDefinition/extension-AuditEvent.entity.identifier base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]