66Furthermore, although, in such an action, the court seised has only a power to annul the decision of the competent authorities rejecting such an application for admission, it must be ensured that the conditions under which that action is brought and, where appropriate, the judgment adopted at the end of that action are such that they allow, in principle, a new decision to be adopted within a short period of time, in such a way that a sufficiently diligent third-country national can benefit from the full effectiveness of the rights which he or she derives from Directive 2016/801.