The Autorité de contrôle prudentiel et de résolution may, when the situation so warrants and under conditions laid down by decree, appoint an additional auditor to the undertakings mentioned in A of I of Article L. 612-2, other than the bodies mentioned in 3° and carrying out activities of a hybrid nature, 4° bis, 5°, 6°, 7°, 8° and carrying out activities of a hybrid nature, 11° and 12°, and in the bodies mentioned in B of the same I, other than the mixed insurance group companies mentioned in 6°.