Cross-appeal in proceedings for nullity of an arbitral award is subject to the same rules as cross-appeal in civil judgments, with the consequence that it must be brought in the manner and within the terms provided for cross-appeal, on pain of forfeiture.
The contradiction in an award that entails nullity pursuant to Article 829, paragraph 1, N. 11, of the Code of Civil Procedure, must emerge between the different components of the operative part or between the reasoning and the operative part, whilst internal contradiction between different parts of the reasoning may assume relevance as a defect of the award only when it renders absolutely impossible the reconstruction of the logical-legal reasoning underlying the decision due to total absence of reasoning referable to its functional model.
Challenge of an award for non-observance of rules of law is admissible exclusively within the limits indicated by Article 829, paragraph 3, of the Code of Civil Procedure, that is only when expressly provided by the parties in the arbitration clause or by law.