PDC request not visible if no flight plan available

[kusterjs]

I noticed that I (obviously) cannot reply to a PDC request of a pilot which I have no flight plan from. So if the pilot mixes up his call sign when sending the PDC request, I get a nice "ding", but nothing else. I know then that a request was sent, but not by whom. Currently, I then can only check on the hoppie website.
Would it be possible in such cases to send an automatic message to the pilot like "NO MATCHING ATC FPL FOUND", and make the plugin deny the request? As an alternative, the CPDLC chat could at least show what call sign attempted to send a request.

[droesen]

Was about to file an issue here as well... having had those cases today as delivery. You'll get a request and have no idea whom to tell that (s)he could wait forever for a reply without a FPL on file... :-)

Auto-reject seems to be the most sensible action to me but could also live with the automatic notification.