MSIR.0847 Value already specified for parameter (name)
On a method invocation, the indicated parameter was specified twice: either first as a positional parameter (for a NameAllowed parameter) and then as a named parameter, or both times as a named parameter. Obviously, only one of the passed instances of the parameter could be the intended one, so the other should be removed from the method invocation.
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 | 
| ECHO | Displays the line that caused the error |