description: This constrained OperationOutcome resource has one code system containing all the ITK response codes, as part of a single ITK response message. These ITK response codes can either be positive or negative, where all negative response codes are deemed to be fatal and no further processing will be carried out on the message. package_name: rs/NHSD.Assets.STU3 derivation: constraint name: ITK-Response-OperationOutcome-1 type: OperationOutcome elements: issue: index: 0 elements: details: short: Additional details about the response index: 1 elements: coding: index: 2 elements: system: pattern: {type: uri, value: 'https://fhir.nhs.uk/STU3/CodeSystem/ITK-ResponseCodes-1'} type: uri index: 3 version: {index: 4} code: {index: 5} display: {index: 6} userSelected: {index: 7} required: [code, display, system] required: [coding] required: [details] package_version: 1.6.0 class: profile kind: resource url: https://fhir.nhs.uk/STU3/StructureDefinition/ITK-Response-OperationOutcome-1 base: http://hl7.org/fhir/StructureDefinition/OperationOutcome version: 1.2.0