In general, constitutes violation of the contradictory the pronunciation a a praise "a surprise" or of the "third via", that si ha when the referees have pos to a foundation of the decision one question detected ex officio not subcomplain in precedence per contradictory of the parts. however, the violation of the obligation by subscriptions to parts issues withholding decisive but sculpted directly in the ruling arbitral without provoking the contradictory, can configure a cause of nullity of the ax not compared to questions in right, but only compared to issues of or mixed (of .