In theme of arbitration ritual, art. 819-ter of the Italian Civil Code civ., The which it provides the contestability with the only regulation of competence of the pronouncements affirmative or negative of the competence in competence Report ad one convention of arbitration, si apps a all le judgments pronounced after entry in vigor of the cited provision (2 March 2006), a ignored from the date date of instourazi One of the relative process. the solution interpretative si imposes in reason of the recognized nature jurisdiction of the arbitration ritual and application of the principle tempus regit actu m, per the which, in absence different provision transitory provision, the regime of challenging of the measures it goes desunt from the discipline in force when they are veute a legal existence.