Currently having a business requirement where we have to default First and Last names is the case they are returned as null from Identity Provider. The Keycloak form that appears after the Identity Provider call is done, should not appear in this case.

Firstname is not that common, but the Lastname is not a mandatory field on e.g. Google account.

Is there a way to default the Lastname to "Doe" if the value is null? e.g. via a Mapper rule?

Thanks