EXPLANATION This message should occur only on a down-level computer. Any action to correct the problem should be performed ...

EXPLANATION    This message should occur only on a down-level computer. Any action to correct the problem should be performed on that computer.  The schedule file, SCHED.LOG, in the LOGS directory, is damaged.    ACTION    Restore the schedule file from a backup copy, or delete the file and create a new one using the AT utility.