Operation Definition

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  "url" : "http://hl7.org/fhir/OperationDefinition/NamingSystem-preferred-id",
  "version" : "5.0.0",
  "name" : "PreferredId",
  "title" : "Fetch Preferred id",
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  "date" : "2023-03-26T15:21:02+11:00",
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  }],
  "affectsState" : false,
  "code" : "preferred-id",
  "comment" : "Servers handle this request by finding the provided identifier in their known naming systems, and returning the requested identifier type ([NamingSystem.uniqueId.type](namingsystem-definitions.html#NamingSystem.uniqueId.type)). If there is more than one identifier of the specified type (for the specified date), then the 'preferred' identifier will be returned.  If there is only one identifier, that identifier will be returned even if it is not preferred.  If there are multiple preferred identifiers or multiple identifiers with none marked as preferred, the system MAY return an error or may list all identifiers applicable for that date and period.  \n\nIf the server wishes, it can also look through all code systems and value sets it knows about when attempting to find the requested identifier.",
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