Code of Organization and Civil Procedure (Cap. 12), article 730

730. Any plea to the jurisdiction of the court or to the capacity of the parties, and any plea of compromise, arbitration, res judicata , prescription, or nullity of acts, shall be determined under a separate head, either before, o r together with the decision o n the merits. Pleas which may be raised at any stage of proceedings. Substituted by: XXIV .1995.280.