Action to annul an arbitration award. Arbitration commenced against an estate, with active participation of the estate administrator. Probate proceedings that had already been closed at the time the arbitration proceedings were commenced. Omission as to the extinction of the estate. Subsequent allegation of nullity of the arbitration award due to the estate's lack of standing as defendant. Dismissal of the allegation of nullity of the arbitration award. Nullity held in reserve. Principles of objective good faith and venire contra factum proprium: