I'm looking for a way to have a different case reference format if an external customer logs a case to when our internal ones do.
Basically our setup is this - we mostly use service manager for internal users, and are just using the standard IN and SR format for case references. We do have an external customer we also support, and have set up a customer portal so they can log issues themselves. We'd like the cases they log to have a different format for the reference so we can easily tell them apart, something like e.g. EC000001 instead of IN00001.
I was thinking we could log the external cases as a Problem rather then Incident or Service Request, then set the required format for all Problems logged. I can't see any way to log Problems through the customer portal though, it only allows us to add Catalog Items for Incidents and Service Requests. Is there a way to achieve what we want this way? Or is there a better way to get these cases logged with a different reference format?