ANTF0100I
FLASHCOPY OPERATION ERROR. MSG FRMT = f, MSG NMBR = n, REAS: rs

Explanation

The ESS subsystem detected an internal error while processing the FlashCopy® request. The request was not completed.

System action

The command is rejected.

System programmer response

This is generally an error caused by existing conditions or states in the subsystem. If the problem recurs, search problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center. An unformatted GTF I/O trace on the specified device while the problem recurs will probably be required for further diagnosis.
Note: The reasons for the internal error can be correctable by the user. The following list has some of these reasons and a description of the error and possible corrective actions:
MSG FRMT = 0, MSG NMBR = F, REAS: 56
The FlashCopy request specified a volume that has pinned data. Correct the pinned data situation and resubmit the FlashCopy request.
MSG FRMT = 0, MSG NMBR = F, REAS: 60
The target device for a FlashCopy request is in a path grouped status. This implies the device is online to a host system (not necessarily to the host issuing this FlashCopy request). Either ensure that the target device is offline to all systems or specify the ONLINTGT(YES) parameter.
MSG FRMT = 0, MSG NMBR = F, REAS: 82
The subsystem has insufficient resources or too many FlashCopy relationships to complete this FlashCopy request. Resubmit the request when the condition is corrected or relieved.
MSG FRMT = 0, MSG NMBR = F, REAS: 84
The FlashCopy request specified devices that are not in the same ESS logical subsystem or the devices are not the same size and format.
MSG FRMT = 0, MSG NMBR = F, REAS: BB
The FlashCopy FCWITHDR request specified DDSW(YES) for a source device which is in an existing full-volume FlashCopy relationship.

Source

ESS FlashCopy.