3.1.5.2.3 Sending a Format List Response PDU
The fields of the Format List Response PDU are specified in section 2.2.3.2.
The Format List Response PDU is sent to indicate the success or failure of processing the Format List PDU, as specified in section 3.1.5.2.2. On success, the msgFlags field of the clipHeader field MUST contain the CB_RESPONSE_OK flag. On failure, it MUST contain the CB_RESPONSE_FAIL flag.