M204.1064 I/O error DUMPing file fileName to token
An I/O error was encountered writing the Model 204 file to the backup data set.
Response: Look for possible problems such as the incorrect specification of the data set or the data set length. Check whether there were media problems.
|Sets online return code
|Sets batch (single user) return code
|Error class; the message can be suppressed with the X'04' bit setting of the MSGCTL parameter
|Writes the message with line type ER to the audit trail
|Increments the error count (ERCNT) parameter