The exception of arbitration is exception in meaning proper. Currently has in so sense art. 819-ter of the Italian Civil Code proc. Civ. The first paragraph, third and fourth period of the article they have that the exception of incompetence of the judge in reason of the convention of arbitration must be proposal, a penalty of forfeiture, in the A appearance of response and that the failure proposition of the exception excludes the competence referee limited to the controversy decisive in judgment. even in the regime previgent not it doubted of the nature of exception in meaning or tight, reserved part of the exception compromise compromise.