OES901 PST COUNT EXCEEDS 255

Explanation
The EPILOG task that gathers information about IMS resources found an invalid PST count in an IMS control block. This should only occur if IMS was in the process of terminating. 

System action
The EPILOG resource collector terminates with an abend. 

User response
If IMS is not in the process of terminating, call IBM® Software Support.   