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0074S

I/O ERROR ON volser, SENSE=sense-bytes, DSN=dsn

Reason:

A permanent disk I/O error occurred on the DASD volume volser while accessing the OS file with the indicated data set name. The variable sense-bytes indicates the nature of the I/O error. Execution continues if possible. The command performing the I/O ends with return code 100.

Action:

Enter the command again. If the problem persists, contact your system support personnel.