During recovery from a failure, one of the primary control blocks used by global resource serialization to anchor its control block structure was found to be either corrupted or the pointer to it was bad. Global resource serialization is unable to recover from this error.
The system enters a non-restartable X'0A3' wait state.
Notify your system programmer.
Take a stand-alone dump and contact the IBM® Support Center.
Global resource serialization
ISGCMEST, ISGGQWBR, ISGXFRRX, ISGREC
2,10
1