(10)Given the complexity of cross-border conversions, mergers and divisions (collectively, ‘cross-border operations’) and the multitude of the interests concerned, it is appropriate to provide for the scrutiny of the legality of cross-border operations before they take effect, in order to provide legal certainty. To that effect, the competent authorities of the Member States involved should ensure that a decision on the approval of a cross-border operation is taken in a fair, objective and non-discriminatory manner and on the basis of all relevant elements required by Union and national law.