While DFSMShsm was writing the migrated copy of a data set, an I/O error occurred. An access method or hardware error message precedes this message. Message ARC1001I or ARC0734I gives the data set name.
The migration operation for the data set ends. DFSMShsm processing continues.
Respond to the associated access method message or hardware error message. Issue a command to cause migration of the data set if forced migration is required.
DFSMShsm