description: An extension to identify the Unique Property Reference Number (UPRN). package_name: NHSD.Assets.STU3 derivation: constraint name: Extension-ODSAPI-UPRN-1 type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.nhs.uk/STU3/StructureDefinition/Extension-ODSAPI-UPRN-1'} index: 0 valueString: type: string short: The Unique Property Reference Number (UPRN) index: 1 slicing: slices: valueString: match: {} schema: {type: string, short: The Unique Property Reference Number (UPRN), _required: true, index: 1} min: 1 package_version: 1.5.0 class: extension kind: complex-type url: https://fhir.nhs.uk/STU3/StructureDefinition/Extension-ODSAPI-UPRN-1 base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueString]