In PDM Pro I'm trying to set the group level warning 'Check-in' option 'File Name is not unique' so that my users do not inadvertently check in an object with a name that already exists in the database. I need to do this instead of using the 'No Duplicates Allowed' global setting due to other corporate entities allowing duplicates to be made. I have the option set, but it doesn't stop the check-in of files named exactly the same. Does anyone know why this would occur?