description: This cross-version extension represents AuditEvent.participant.altId from http://hl7.org/fhir/StructureDefinition/AuditEvent|1.0.2 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r2.r5 derivation: constraint name: ext_R2_AuditEvent_pa_altId type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Alternative User id e.g. authentication choices: [valueString] index: 1 valueString: base: {path: 'Extension.value[x]'} type: string short: Alternative User id e.g. authentication choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-AuditEvent.participant.altId'} index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/1.0/StructureDefinition/extension-AuditEvent.participant.altId base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]