Emails showing in the Send Notification dropdown are apparently populated when the TN is opened, and it shows ALL the EmailRouting table entries for that ProcessType (e.g. borrowing, doc del, lending) regardless of whether that particular email has a notification template for that RequestType (article or loan).

So what happens, is that there is a long list of emails in the dropdown, and if they choose an email template that doesn't apply to that TN's RequestType, then it throws an error, which isn't really graceful.

Ideally, the Send Notification dropdown would only show applicable emails that work for both that ProcessType and that RequestType.