Situations of incompatibility capable of compromising the impartiality of arbitrators must be raised by means of a recusal application under Article 815 of the Code of Civil Procedure within the peremptory time limit of ten days from notification of the appointment or from subsequent knowledge of the ground for recusal.
Situations of incompatibility discovered after the decision are irrelevant to the validity of the award, unless they amount to an absolute incapacity to exercise the arbitral function.
Grounds of nullity which in reality amount to an inadmissible review of the merits of the dispute must be rejected.