This tool is designed to remove duplicate mark warnings from the Autodesk® Revit® files. 

After running the command, select whether to remove duplicate mark warnings from: 

• Loadable families only.
• All selected families (need to select before running the tool)

After the selection, you can erase the mark value or you can give the numeric value sequence.

https://www.youtube.com/watch?v=VwZCeedP3QI

NOTE: The tool will work for 30-days until activation.
Activation steps:
1. Users has to send us the license code which is shown in the app license dialog box when the app is launched and with the payment receipt to the "bim_s_s@yahoo.com"
2. We will send the activation code to the user's email within 24 hours.
3. Click on "activate" in the license dialog box, enter the code received and hit OK to activate the app.