GRS could not issue an ENF signal (event code 51) to report a change in contention for the named resource because it could not collect current ownership data for the resource. This message is only issued when the system does not issue an ABEND to record the problem.
GRS does not issue the signal to notify contention monitors such as RMF™ that a change in contention has occurred. The monitor's records of contention information for the affected resource will not reflect the actual state of contention until the next successful signal pertaining to that resource.
Notify your system programmer.
Determine the cause for the GQSCAN failure and correct it if possible. If the GQSCAN return code is C and the reason code 10 indicating that notification was lost because the system was migrating from ring mode to star mode, no further action is required. If the scope is SYSTEMS (S=SYSTEMS), the GQSCAN return code was C, and the reason code C indicating a sysplex processing failure, this is most likely a case where another STAR mode system is not responding for a long period of time. Investigate messages related to XCF connectivity and systems recently being partitioned out of the sysplex. Recent XCF partitioning of an unresponsive system would have most likely removed the root cause of the problem.
Global resource serialization
ISGGCN
2,10
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