description: An OperationOutcome that contains any information, warning, and/or error messages that were generated while processing an operation such as $evaluate or $prepopulate.
package_name: hl7.fhir.uv.extensions.r4
derivation: constraint
name: Messages
type: Extension
elements:
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/cqf-messages'}
    index: 0
  value:
    choices: [valueReference]
    index: 2
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/OperationOutcome']
    index: 3
package_version: 5.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/cqf-messages
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.1.0
required: [valueReference, value]