description: The Number of SOP Instances referred to by this entity. package_name: rs/hl7.fhir.r5.core derivation: constraint name: NumberOfInstances type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/auditevent-NumberOfInstances'} type: uri index: 1 value: choices: [valueInteger] index: 3 valueInteger: {type: integer, choiceOf: value, index: 4} package_version: 5.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/auditevent-NumberOfInstances base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0-ballot required: [value, valueInteger]