description: This cross-version extension represents DocumentReference.created from http://hl7.org/fhir/StructureDefinition/DocumentReference|1.0.2 for use in FHIR R4B.
package_name: hl7.fhir.uv.xver
derivation: constraint
name: ext_R2_DocumentReference_created
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-DocumentReference.created'}
    index: 0
package_version: r2.r4b-0.0.1-snapshot-1
class: extension
kind: complex-type
url: http://hl7.org/fhir/1.0/StructureDefinition/extension-DocumentReference.created
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]