052

Explanation
Alternate CPU recovery (ACR) encountered an unrecoverable
error while recovery was in progress for another processor. This is
probably a hardware error.

System action
The system: Issues message IEA857W
Writes a logrec error record for the failed processor
Places all processors in a wait state X'052'

Operator response
Look at accompanying message IEA857W and the
logrec error record to identify the error.
If message IEA857W
indicates that this is a hardware error, remove the failing hardware
from the system, or remove the system with the failure from the complex.
Then reIPL the other systems. Contact hardware support.
Otherwise,
report the problem to system programmer.

System programmer response
Search problem reporting databases
for a fix for the problem. If no fix exists, contact the IBM® Support Center. Provide the logrec error
record and the text of message IEA857W.

Source
Alternate CPU recovery (ACR)