o artigo 41 das Regras de Arbitragem do Centro faz minuciosas disposição de objeção relativa à jurisdição, à competência e à aplicação (ou seja, admissibilidade)

Rule 41
Preliminary Objections
(1) Any objection that the dispute or any ancillary claim is not within the jurisdiction of the Centre or, for other reasons, is not within the competence of the Tribunal shall be made as early as possible. A party shall file the objection with the Secretary-General no later than the expiration of the time limit fixed for the filing of the counter-memorial, or, if the objection relates to an ancillary claim, for the filing of the rejoinder—unless the facts on which the objection is based are unknown to the party at that time.
(2) The Tribunal may on its own initiative consider, at any stage of the proceeding, whether the dispute or any ancillary claim before it is within the jurisdiction of the Centre and within its own competence.
(3) Upon the formal raising of an objection relating to the dispute, the Tribunal may decide to suspend the proceeding on the merits. The President of the Tribunal, after consultation with its other members, shall fix a time limit within which the parties may file observations on the objection.
(4) The Tribunal shall decide whether or not the further procedures relating to the objection made pursuant to paragraph (1) shall be oral. It may deal with the objection as a preliminary question or join it to the merits of the dispute. If the Tribunal overrules the objection or joins it to the merits, it shall once more fix time limits for the further procedures.