This is a 3 byte field that indicates the approximate time, expressed in seconds, that the MQGET call waits for a suitable message to arrive. This value is used to calculate the number of milliseconds and is placed in the MQGMO Get Message options structure field WaitInterval on the MQGET call. A value of +999 indicates an unlimited wait interval (i.e., special value, MQWI_UNLIMITED). If the value can not be determined, UNKNOWN will appear on the dump.