Today arbitration centers offer significant services in context of arbitration. Offered services in centers are not identical, some of centers may perform different activity than others. One of major activities of arbitration centers is scrutiny of the arbitration proceeding. In centers such as the ICC Court of Arbitration and ICSID also scrutiny of the ward take place. Scrutiny of ICC Court take place to draft ward and for issues of form, the tribunal is obliged to follow the Court suggestion. In ICSID scrutiny is an quasi-judicial oversight and center has the right of review and annulment of arbitration award. In this article we will examine the question of whether this type of monitoring is to intervene in the arbitration tribunal or national courts proceeding.