DFSMShsm issued the OPEN macro to open an output data set during a backup operation. During OPEN processing, the ESTAE routine was invoked. An OPEN error message with component identifier IEC precedes this message. Message ARC1001I also precedes this message, giving the data set name.
Reason code 1 indicates that WORM tape is not supported for this function.
The backup operation ends. DFSMShsm processing continues.
Take the action indicated by the OPEN error message. Retry the backup operation.
DFSMShsm