I have a vault user who seems to believe that every folder he creates needs to have a copy of every pdf he thinks he needs. this has led to a huge quantity of duplicate files in the vault with no metadata filled in and no way to effectively determine which is the relevant version.

I have locked the ability to create duplicate filenames but now he just changes the filenames and continues to work in this fashion. Yes we have tried to talk with him about this to no avail. is there any program that works nicely in pdm to compare files and determine if they are true duplicates?