This case-sensitive code system http://hl7.org/fhir/messageheader-response-request
defines the following codes:
Code | Display | Definition |
always | Always | initiator expects a response for this message. |
on-error | Error/reject conditions only | initiator expects a response only if in error. |
never | Never | initiator does not expect a response. |
on-success | Successful completion only | initiator expects a response only if successful. |