In seat of appeal per cassation adverse the sentence that has decisive on the appeal per nullity of the praise arbitration, the courtyard of cassation not can appreciate directly the praise arbitral, but only the decision contested in the limits of the reasons appeal and, where still admitted, to adequacy of the motivation of the sentence rendering on the appeal, not if they can moreover replace its judgment a espresso from the courtyard of merit on the correctness of the reconstruction of the facts and of the evaluation of the elements instructors.