The Global Mirror RSESSION request was rejected by the storage control because nonvolatile structures could not be updated or accessed because of failure, or because the storage control is in single cluster mode.
The command is rejected.
Verify that the controller is not in single cluster mode. After making any changes or corrections, resubmit the request. If the problem persists, contact your service representative.
Peer-To-Peer Remote Copy (PPRC).