Arbitration is a consensual dispute resolution process. The consent of the parties serves as the touchstone in determining the jurisdiction of the arbitral tribunal. In this regard, the scope of the parties’ consent to the arbitral tribunal’s jurisdiction is rooted in: a) The arbitration agreement A valid arbitration agreement is the primary source of jurisdiction. It reflects the parties’ consent to exclude the Court’s original jurisdiction and to refer the disputes to arbitration. Without a valid arbitration agreement, the arbitral tribunal has no jurisdiction. It defines the scope of the disputes that can be referred for arbitration. Even if the main contract is alleged to be invalid, the arbitration agreement is treated as autonomous. It is the source as well as the limit of jurisdiction. If a dispute falls outside the terms of the clause, the arbitral tribunal has no authority. b) The terms of reference The terms of reference crystalize the specific claims. The parties’ pleadings (statement of claim, defence, counterclaim and reply) define the issues referred for the arbitral tribunal’s determination. The arbitral tribunal’s jurisdiction is not just a matter of the arbitration agreement in the abstract but is shaped by how the parties frame their disputes. For example, if both parties plead and submit on the effect of a limitation of liability clause, this may show that the issue is within the arbitral tribunal’s jurisdiction, because the parties have consented to have it determined by the arbitral tribunal. Conversely, if a claim is advanced that was never pleaded, or a relief is granted beyond the submissions, the arbitral tribunal may have acted beyond its jurisdiction. In PT Prima International Development v Kempinski Hotels SA and other appeals [2012] 4 SLR 98, the Singapore Court of Appeal explained the distinction between the scope of an arbitration agreement and the scope of submission to arbitration (at para [32]) in this manner: … It is plain that the scope of an arbitration agreement in the broad sense is not the same as the scope of submission to arbitration. The former must encompass the latter, but the converse does not necessarily apply, in that the particular matters submitted for arbitration may not be all the matters covered by the arbitration agreement. The parties to an arbitration agreement are not obliged to submit whatever disputes they may have for arbitration. Those disputes which they choose to submit for arbitration will demarcate the jurisdiction of the arbitral tribunal in the arbitral proceedings before them. [emphasis added] c) The law of the seat or lex arbitri Lex arbitri or the curial law means the law of the seat and this refers to the body of law that governs how the arbitration is conducted, i.e. the appointment and challenge of arbitrators, the tribunal’s powers, interim measures, procedural timelines, setting aside awards and the role of the Courts in supporting or supervising the arbitration. It governs the conduct of the arbitration process itself. Typically, the lex arbitri is the arbitration law of the seat of arbitration. So, if the seat of arbitration is Kuala Lumpur, our AA 2005 is the lex arbitri, regardless of the substantive governing law of the contract (which is the proper law of the contract or lex causae). d) Party autonomy and Agreement on the Procedure In arbitration, party autonomy is the principle that the scope of the arbitral tribunal’s jurisdiction, the rules it applies and the matters it decides are primarily determined by the agreement of the parties. It is often referred to as the cornerstone of arbitration. Just as the parties decide what disputes can be referred (eg. “all disputes arising out of or in connection with this contract”), the parties may also limit the arbitral tribunal’s powers or jurisdiction (eg. by including an exclusion clause that the arbitral tribunal has no power to award punitive damages or a limitation of liability clause that the arbitral tribunal has no jurisdiction to award a sum exceeding a certain amount). In Malaysia, prior to the amendment in 2018, parties may exclude the application of sections 41 and 42 of the Arbitration Act 2005, making the arbitral tribunal’s jurisdiction as regards its finding of law as final and binding on the parties.