IEC376W CAS ALLOCATION TASK IS WAITING FOR ALLOCATION

Explanation
A request to allocate a VVDS dynamically has been
issued, and SVC 99 has not completed.  Possible reasons for this situation
are that a mount was issued, or a VARY OFFLINE command is waiting.

System action
The system issues this message two minutes after
issuing SVC 99, and every ten minutes thereafter.

System programmer response
Enter F CATALOG,LIST to determine
which task is waiting. That task will return a nonzero return code
to its caller.

Source
DFSMSdfp