description: Allocate a new uuid in a named variable for use in extraction. This is usually used to set the `fullUrl` for a resource in the output extraction bundle, and then referenced in other resources within that transaction bundle (via fhirpath expressions).
package_name: hl7.fhir.uv.sdc
derivation: constraint
name: ExtractAllocateIdExtension
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-extractAllocateId'}
    index: 1
  value:
    choices: [valueString]
    index: 3
  valueString: {type: string, choiceOf: value, index: 4}
package_version: 4.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-extractAllocateId
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.0.0-ballot
required: [valueString, value]