FlashCopy® processing attempted to read subsystem status information about the specified device. The channel program for this request received a unit check.
The command is rejected.
Multiple conditions can cause this error. The device is defined to the host but cannot respond to the I/O request. Use the DEVSERV commands to check path and device status from the system console. Correct the conditions and resubmit the command. If this error recurs, research problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center.
ESS FlashCopy.