description: This Subscription resource has been constrained to represent a subscription request for the National Events Management Service. package_name: NHSD.Assets.STU3 derivation: constraint name: EMS-Subscription-1 type: Subscription elements: contained: {type: Provenance, short: Contained Provenance resource, index: 0} contact: index: 1 elements: system: {index: 2} value: {index: 3} use: {index: 4} required: [value, system, use] error: {index: 5} tag: {index: 6} package_version: 1.0.0 class: profile kind: resource url: https://fhir.nhs.uk/STU3/StructureDefinition/EMS-Subscription-1 base: http://hl7.org/fhir/StructureDefinition/Subscription version: 1.0.0 required: [contact]