The grounds for nullity of an arbitral award for failure to decide or failure to state reasons under Article 829(5) and (12) of the Code of Civil Procedure presuppose the absence of a decision or of reasons, and may not be invoked where reasons are given, even if the challenging party does not agree with them.
In proceedings for the annulment of an arbitral award under Article 829 of the Code of Civil Procedure, criticism of the merits of the reasoning given by the arbitrator is not permitted, provided that such reasoning is coherent, logical, and clear in its content.
An arbitral award is void under Article 829(4) of the Code of Civil Procedure where the arbitrator has decided issues falling outside the scope of the arbitration clause entered into by the parties.
Procedural directions given by the arbitrator in the course of the arbitral proceedings are not amenable to challenge for annulment under Article 829 of the Code of Civil Procedure.
The challenge for annulment of an arbitral award under Article 829 of the Code of Civil Procedure, being directed at the omission of a ruling, does not permit the review of the merits of the assessments made by the arbitrator in deciding the dispute.