[keycloak-user] Keycloak user federation issue with email constraint

[valsaraj pv]

Hi,

I am checking Keycloak user federation with openldap sourcce. It worked
fine & synced users but some users are not synced as they hace same email
id as already sunced users.
I see this constraint in Keycloak postgresql user_entity table:
CONSTRAINT uk_dykn684sl8up1crfei6eckhd7 UNIQUE (realm_id, email_constraint)

But we need only uid (userName in Keycloak) unique. Is there anyway to
configure that email can be duplicated?