def unset_impact_state(self):
        """Unset impact, only if impact state change is set in configuration

        :return: None
        """
        cls = self.__class__
        if cls.enable_problem_impacts_states_change and not self.state_changed_since_impact:
            self.state = self.state_before_impact
            self.state_id = self.state_id_before_impact