In the+judgment+arbitration,+the+question+of the+violation+of the+contradictory+must+be+examined+not below+the+profile+formal,+ma+in the area+one+search+vault+to the assessment+of+a+actual+lesion+of the+po Ssitability+of+deduct+and+contradict,+waves+check+if the act+has+equally+reached+the+purpose+of+establish+a+regular+contradictory+and+if,+anyway,+non -compliance+not+has+caused+prejudice+to+part.