Controls how user profile root attributes (name, nickname, picture, etc.) are synchronized from the identity provider. 'on_each_login': updates on every authentication (default); 'on_first_login': sets attributes only during initial login, allowing independent updates afterward; 'never_on_login': never syncs from IdP, preserving locally-set values.
Controls how user profile root attributes (name, nickname, picture, etc.) are synchronized from the identity provider. 'on_each_login': updates on every authentication (default); 'on_first_login': sets attributes only during initial login, allowing independent updates afterward; 'never_on_login': never syncs from IdP, preserving locally-set values.