# Pastebin y8injDAz
        If effective option is used and OS-INHERIT extension is enabled, the
        following functions will be applied:
        1) For any group role assignment on a target, replace it by a set of
        role assignments containing one for each user of that group on that
        target;
        2) For any inherited role assignment for an actor on a target, replace
        it by a set of role assignments for that actor on every project under
        that target.

        It means that, if effective mode is used, no group or domain inherited
        assignments will be present in the resultant list. Thus, combining
        effective with them is invalid.