ANTF0511E
FLASHCOPY command COMMAND FAILED FOR DEVICE device. AN I/O CONFIGURATION CHANGE HAS OCCURRED. reason

Explanation

The FlashCopy® command issued to device has failed due to an I/O configuration change that occurred while processing the command. The reason will be blank unless z/OS® is running as a guest under VM. The possible values for the reason code are:
Blank
Not running as a guest under VM
Reason=01
Source LSS/UA mismatch
Reason=02
Target LSS/UA mismatch
Reason=03
CUISSID mismatch
Reason=04
Subchannel ID mismatch.

System action

The command is rejected.

System programmer response

Re-try the request.

Source

ESS FlashCopy