<status value="active"/><experimental value="true"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom></contact><description value="FHIR RESTful interaction codes used for SubscriptionTopic trigger."/><compose><include><system value="http://hl7.org/fhir/restful-interaction"/><concept><code value="create"/></concept><concept><code value="update"/></concept><concept><code value="delete"/></concept></include></compose></ValueSet>

Include these codes as defined in http://hl7.org/fhir/restful-interaction
Code Display Definition
create create Create a new resource with a server assigned id.
update update Update an existing resource by its id (or create it if it is new).
delete delete Delete a resource.

Code	Display	Definition
create	create	Create a new resource with a server assigned id.
update	update	Update an existing resource by its id (or create it if it is new).
delete	delete	Delete a resource.