Reasons are given for an unfavourable opinion or an opinion with reservations. In particular, it may be based on the fact that the proposed statutory auditor, or the natural person who has been approached to perform the assignment, does not offer all the guarantees of experience, competence or independence necessary for the performance of these duties, taking into account the nature and characteristics of the business of the person subject to supervision by the Autorité de contrôle prudentiel et de résolution.