3.1.5.1.3 Processing the RopNotify and RopPending Responses
The RopNotify (section 2.2.14.2) and RopPending (section 2.2.14.3) ROP responses appear at the end of the RopsList field of the ROP output buffer, as specified in section 2.2.1. A RopPending ROP response SHOULD<16> be present only if the ROP output buffer does not contain all queued RopNotify ROP responses. For more details about how the client processes these ROPs, see [MS-OXCNOTIF] section 3.2.5.