(1) The defendant had held a license issued under ORS 475C.005 to 475C.525, or was performing work for or on behalf of a person that had held a license issued under ORS 475C.005 to 475C.525;
(2) The violation concerned an activity for which the license exempts the person from ORS 475C.337, 475C.345 or 475C.349;
(3) The license had lapsed or had been suspended or revoked; and
(4) The defendant reasonably believed that the license had not lapsed or had not been suspended or revoked. [Formerly 475B.398]