Here is a simple test if someone can confirm this. Create a note object. Number it "NOTE1". Rename it and change the note to "NOTE2". Go back and try to create a new note numbered "NOTE1". Reply back if you get a uniqueness error on creating the second note. Search for "NOTE1". You should find nothing.
What I noticed is that since notes are EPMDocuments but do not have a filename (aka CADNAME), they are created with a CADNAME that matches the number. Rename actions to change the number do not have a filename field hence CADNAME cannot be change. CADNAME must be unique so that is why you get the error. Reported bug to PTC. Tested this on 10.1.
Solved! Go to Solution.