http://hl7.org/fhir/StructureDefinition/cqf-targetInvariant|5.2.0

description: 'DEPRECATED: Use the `targetConstraint` extension instead. Specifies an invariant that is enforced on instantiated resources. This extension can be applied to any element of a definitional resource (such as ActivityDefinition or Measure) and indicates that the invariant should be enforced on resources that are instantiated from the definition. For example, this extension can be used to define a constraint such as `numerator count must be less than or equal to denominator count`.'
derivation: constraint
name: TargetInvariant
type: Extension
elements:
  extension:
    short: Unique identifier
    index: 0
    slicing:
      slices:
        key:
          match: {}
          schema:
            short: Unique identifier
            _required: true
            index: 0
            extensions: {}
            elements:
              extension: {index: 1}
              url:
                pattern: {type: Uri, value: key}
                index: 2
              value:
                choices: []
                index: 4
            required: [value]
        requirements:
          match: {}
          schema:
            short: Why the invariant is defined
            index: 5
            extensions: {}
            elements:
              extension: {index: 6}
              url:
                pattern: {type: Uri, value: requirements}
                index: 7
              value:
                choices: []
                index: 9
            required: [value]
        severity:
          match: {}
          schema:
            short: error | warning
            _required: true
            index: 10
            extensions: {}
            elements:
              extension: {index: 11}
              url:
                pattern: {type: Uri, value: severity}
                index: 12
              value:
                choices: []
                index: 14
            required: [value]
        expression:
          match: {}
          schema:
            short: The invariant expression
            _required: true
            index: 15
            extensions: {}
            elements:
              extension: {index: 16}
              url:
                pattern: {type: Uri, value: expression}
                index: 17
              value:
                choices: []
                index: 19
            required: [value]
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/cqf-targetInvariant'}
    index: 20
  value:
    choices: []
    index: 22
extensions:
  key:
    url: null
    short: Unique identifier
    _required: true
    index: 0
    extensions: {}
    elements:
      extension: {index: 1}
      url:
        pattern: {type: Uri, value: key}
        index: 2
      value:
        choices: []
        index: 4
    required: [value]
  requirements:
    url: null
    short: Why the invariant is defined
    index: 5
    extensions: {}
    elements:
      extension: {index: 6}
      url:
        pattern: {type: Uri, value: requirements}
        index: 7
      value:
        choices: []
        index: 9
    required: [value]
  severity:
    url: null
    short: error | warning
    _required: true
    index: 10
    extensions: {}
    elements:
      extension: {index: 11}
      url:
        pattern: {type: Uri, value: severity}
        index: 12
      value:
        choices: []
        index: 14
    required: [value]
  expression:
    url: null
    short: The invariant expression
    _required: true
    index: 15
    extensions: {}
    elements:
      extension: {index: 16}
      url:
        pattern: {type: Uri, value: expression}
        index: 17
      value:
        choices: []
        index: 19
    required: [value]
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/cqf-targetInvariant
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.2.0
required: [extension]