M204.1093
M204.1093 Sorry, that command is not allowed for a Model 204 system dataset.
You issued a command that is not allowed for a data set beginning with the characters C C A. 
Response: Retry the command, specifying a name that does not begin with CCA. 
Message attributes:
| RETCODEO=0 | Sets online return code | 
|---|---|
| RETCODEB=4 | Sets batch (single user) return code | 
| CLASS=E | Error class; the message can be suppressed with the X'04' bit setting of the MSGCTL parameter | 
| AUDITER | Writes the message with line type ER to the audit trail | 
| COUNT | Increments the error count (ERCNT) parameter |