Fusion Apps - Can we update User Name using FBL??

I was doing some analysis whether we can use User Name Expression parameter of Manage HCM Configuration for Coexistence to create or update the user name with which user can log on to Fusion applications.

I have created a document with step by step instructions I followed to try this. You can find the document here.

Please share your thoughts and feedback. Try from your end and let me know if that works for you.

Keep checking this blog.