The+defect+of+potestas+iudicandi+of the+college+arbitration+is+detectable+ex officio+only+if it is it+derivi+from the+nullity+of the+clause+bosser.+In the+hypothesis+in++the+nullity+derivi, instead,+from+nomins+referee+performed+with+different modes+ +those+agreed+from+parts+or+foreseen+from the+code+of+ritual,+the irregular+composition+of the+college+arbitral+can+constitute+reason+of+appeal+exclusively+if such+irregularities+it is+previous+exceptional+in the+course+judgment+arbitration.