I think there should be an preference to not be able to submit a request unless information has been changed. We frequently get modification requests with no changes made at all.
I see two angles on this--perhaps both? 1. We check for changes to the form and ask the user if they really mean to submit a form without having made changes. 2. We silently reject submissions with no changes. Somehow this seems nicer than telling the user they can't submit the form.
(In reply to Owen Leonard from comment #1) > I see two angles on this--perhaps both? > > 1. We check for changes to the form and ask the user if they really mean to > submit a form without having made changes. > > 2. We silently reject submissions with no changes. Somehow this seems nicer > than telling the user they can't submit the form. What about a modal, summarizing the changes? If there are no changes, it says "No changes have been made." Thoughts?