051
Explanation
Alternate CPU recovery (ACR) encountered an unrecoverable error while recovery was in progress for another processor. ACR attempted to recover but was unsuccessful. This is probably a software error.
System action
The system:
- Issues message IEA857W
- Tries to write a logrec error record for the failed processor
- Places all processors in a wait state X'051'
Operator response
If requested by the system programmer, obtain a stand-alone dump. ReIPL the system.
System programmer response
Look at accompanying message IEA857W to identify the error. If a search of the program reporting databases shows no existing fix, report the problem to the IBM® Support Center. Provide the stand-alone dump the logrec error records.
Source
Alternate CPU recovery (ACR)