description: This extension shows the repository in which a document is stored.
package_name: fhir.r4.wales
derivation: constraint
name: ExtensionDataStandardsWalesSourceSystem
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-SourceSystem'}
    index: 0
  value:
    short: Source system.
    choices: [valueReference]
    index: 2
  valueReference:
    type: Reference
    short: Source system.
    choiceOf: value
    refers: ['https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Device']
    index: 3
package_version: 2.3.0
class: extension
kind: complex-type
url: https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-SourceSystem
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1