Hi, We are currently working on keycloak as SSO solution, where keycloak will act as identity broker. My use case is as below - User 1 is present in keycloak broker and user 1 is also present in identity provider . - But in identity provider user 1 does not have username assosiated with that ,instead it has employeeid attribute as unique key. Now my goal is to identify if user already present in broker keycloak and I tries to login through Identity provider it should identify it as existing account and merge both the accounts. (Currently since identity provider does not have username for user 1 it is not able to identify in broker as existing account). Is there any configuration which can tell keycloak broker to check for employeeid attribute and not username for existing account ? Thanks, Priti