Hi, 

I need some help with Community login process. Our organization has two communities which allows self registration. We have different permission set for each community to provide community access.  Let's consider the scenario when a user has self registered for Community A and now wants to access Community B.

1. Should we ask user to go through registration process again for Community B or there is any other recommendation.

2. If user tries to self register for community B using same emailid (which we used to create username for Community A), the self registration process fails as username is already being used.

I wonder how other customers have dealt with this kind of scenario where we need to provide self registration for multiple communities without creating duplicates.

Thanks,

Rama