How do I "force" a retry option when all I get to choose from is (C G D F)?

I've been out of RPG for a while.  It feels like this should be fairly simple, but it is escaping me.  Maybe putting it in a MONITOR block, but then how to send a message that can be responded to with a 'C' or 'R'?

A direct call to the RPG program is submitted to a job queue.
In RPG:
Command = 'ClrPfm transacts';
CommandLen = %len( Command );
Callp  QCmdExc  ( ( Command ) : ( CommandLen ) );

If file transacts is open elsewhere, the job sends message "The call to *LIBL/QCMDEXC ended in error (C G D F)."  Instead of that message, I'd like to see a message that gives me (C R) options.

- Dan Bale
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