description: Begin and end date of the validity of the request package_name: hl7.fhir.be.drp derivation: constraint name: BeValidityPeriod type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period'} index: 1 value: choices: [valuePeriod] index: 3 valuePeriod: {type: Period, choiceOf: value, index: 4} package_version: 1.1.0 extensions: {} class: extension kind: complex-type url: https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.0