description: The subscription resource is used to define a push-based subscription from a server to another system. Once a subscription is registered with the server, the server checks every resource that is created or updated, and if the resource matches the given criteria, it sends a message on the defined \"channel\" so that another system can take an appropriate action. package_name: hl7.fhir.core derivation: specialization name: Subscription type: Subscription elements: status: isModifier: true short: requested | active | error | off type: code binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/subscription-status'} isModifierReason: This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid isSummary: true index: 0 contact: {short: Contact details for source (e.g. troubleshooting), type: ContactPoint, array: true, isSummary: true, index: 1} end: {short: When to automatically delete the subscription, type: instant, isSummary: true, index: 2} reason: {short: Description of why this subscription was created, type: string, isSummary: true, index: 3} criteria: {short: Rule for server push, type: string, isSummary: true, index: 4} error: {type: string, short: Latest error note, isSummary: true, index: 5} channel: type: BackboneElement short: The channel on which to report matches to the criteria isSummary: true index: 6 elements: type: short: rest-hook | websocket | email | sms | message type: code binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/subscription-channel-type'} isSummary: true index: 7 endpoint: {short: Where the channel points to, type: url, isSummary: true, index: 8} payload: {short: 'MIME type to send, or omit for no payload', type: string, isSummary: true, index: 9} header: {short: Usage depends on the channel type, type: string, array: true, isSummary: true, index: 10} required: [type] tag: short: A tag to add to matching resources type: Coding array: true binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/subscription-tag'} isSummary: true index: 11 package_version: 3.5.0 class: resource kind: resource url: http://hl7.org/fhir/StructureDefinition/Subscription base: http://hl7.org/fhir/StructureDefinition/DomainResource version: null required: [status, reason, channel, criteria]