Even+in the+judgment+arbitral+the omitted+compliance+of the+contradictory+not+is+a+formal vice+ma+of+activities;+the+nullity+che+n ne n+it arises+ex+art.+829,+co.+1,+n.+9,+cod.+Proc.+Civ.+A+concrete+ sione+of the+right+defense+of the+part+procedural,+underlying,+in addition,+to the+rule+of the+amnesty+per+achievement+of the+purpose. ++ therefore,+the+question+of the+lesion+of the+contradictory+must be+examined+ Not below+the+appearance of the+violation,+on the+plane+formal,+of+one+prescription+preordained+at the+construction+of+such principle,+ma+in the area+a+search+vault+to the assessment+of+a+actual+denial+of the+poe Ssitability+of+deduct+and+of+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 the+part.