Art. 829, co. 1, n. 9, Cod. Proc. Civ. Is preordained to the protection of the right of the parts of interloquire on arguments oppones Aries and of exercise fully the just right of defense, avoiding decisions founded on elements not subordinates at saglio dialects co. the violation of the contradictory ivi assunta a reason of nullity of the praise si concretizes, typically, to the ad one part is precluded the possibilities of deduct or counter -deduction on specifications factual or legal, decisive to the pronunciation.