I have a legacy system which requires unique username but allows multiple users to have the same email.
When I tried to create two accounts according to this scheme, Auth0 showed me an error with the note that second account already exists(despite it had a unique username).
Is it possible to achieve a legacy system behaviour(maybe with the help of rules) with the Auth0?
(My legacy app is written in Python and uses Postgres)
Update: I was able to import such users via Import/Export tool. However, I can log in only into one account(other are inaccessible).