file used as user data cannot be read. file name: aa...aa, reason code=bb...bb

aa...aa: Specified file name (the first 64 characters are output)

bb...bb: Reason code (value of errno)

S: Stops creation processing of the tester file that was being created when the error occurred and interrupts the command processing.

O: Apply an appropriate countermeasure according to the reason code, then re-execute the command.