description: Helps a user track down the source of the problem. package_name: ca.on.consent.r4 derivation: constraint name: IssueSource type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-source'} index: 0 value: choices: [valueString] index: 2 valueString: {type: string, choiceOf: value, index: 3} package_version: 0.10.16 class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-source base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.0.0 required: [valueString, value]