Most requests in MOQT are answered with a common REQUEST_OK (Section 9.3) or REQUEST_ERROR (Section 9.4) message. This document uses the shorthand PUBLISH_OK, REQUEST_UPDATE_OK, TRACK_STATUS_OK, SUBSCRIBE_NAMESPACE_OK, SUBSCRIBE_TRACKS_OK and PUBLISH_NAMESPACE_OK to refer to a REQUEST_OK sent in response to the corresponding request type. Likewise, it uses the shorthand SUBSCRIBE_ERROR, FETCH_ERROR, PUBLISH_ERROR, SUBSCRIBE_NAMESPACE_ERROR, SUBSCRIBE_TRACKS_ERROR, PUBLISH_NAMESPACE_ERROR, TRACK_STATUS_ERROR and REQUEST_UPDATE_ERROR to refer to a REQUEST_ERROR sent in response to the corresponding request type.
§1.5.
Response Message Naming
This is one section of the MoQT specification, rendered per-section for quick reference and citation. The authoritative text is draft-ietf-moq-transport-22 at the IETF.