An action for annulment is only available if:
1° The arbitral tribunal has wrongly declared itself competent or incompetent; or
2° The arbitral tribunal has been improperly constituted; or
3° The arbitral tribunal has ruled without complying with the mission entrusted to it; or
4° The principle of contradiction has not been respected ; or
5° The award is contrary to public policy; or
6° The award does not state the reasons on which it is based or does not indicate the date on which it was made or the name of the arbitrator(s) who made it or does not include the required signature(s) or was not made by a majority of votes.