{
  "package" : "hl7.fhir.uv.extensions@5.2.0",
  "definition" : "Conformant applications producing resources SHOULD correctly populate this element if they know a value for the element, but it is acceptable if the system is unable to ever know a value for the element.\\nNotes: This obligation does not impose a requirement to be able to know a value, unlike populate and able-to-populate which do.  'Knowing' an element means that a value for the element is available in memory, persistent store, or is otherwise available within the system claiming conformance.",
  "system" : "http://hl7.org/fhir/CodeSystem/obligation",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/CodeSystem/obligation#qualifier",
    "code" : "qualifier",
    "valueCode" : "SHOULD"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "valueCode" : "populate-if-known"
  }, {
    "_uri" : "http://hl7.org/fhir/CodeSystem/obligation#security-dependent",
    "code" : "security-dependent",
    "valueBoolean" : true
  } ],
  "codesystem" : "7687731a-172c-5ddf-9c19-d5452e87463e",
  "concept_id" : "afa00d1d-e377-50ea-acd6-eb0bffc5191f",
  "ancestors" : {
    "populate-if-known" : 1,
    "SHOULD:populate-if-known" : 0,
    "ResourceProducerObligations" : 2
  },
  "id" : "0054bc42-6d9a-47f6-a951-12c2499f83bc",
  "code" : "SHOULD:populate-if-known",
  "display" : "SHOULD populate if known",
  "version" : "5.2.0"
}