description: null package_name: fhir.nhs.uk.wayfinder derivation: constraint name: ExtensionWayfinderErrorSource type: Extension elements: url: pattern: {type: uri, value: 'https://fhir.nhs.uk/StructureDefinition/ExtensionErrorSource'} type: uri index: 0 value: short: Identifier for the upstream API that returned the error. choices: [valueCode] index: 2 valueCode: {type: code, short: Identifier for the upstream API that returned the error., choiceOf: value, index: 3} package_version: 1.0.1 class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/ExtensionErrorSource base: http://hl7.org/fhir/StructureDefinition/Extension version: null