In the arbitration irrital, wait the its nature vault ad integrate a event of will negotiale replacement of the of the parts in conflict, the lod o it is challengeable only for i vices which can can vulnerare similar event of will: moreover the error of the judgment arbitration, deductible in headquarters challenge Oria, per being relevant, must integrate the extremes of the essentiality and recognizability of which to articles 1429 and 1431 code civ., while not detects the error C omate from referees with reference to determination adopted in base to conviction reached after having interpreted and examined the elements acquired.