(iii) The Adjudicator had acted in excess of her jurisdiction The above grounds are prescribed by Section 15 of the Construction Industry Payment and Adjudication Act 2012 (“CIPAA”), in particular Section 15 (a), (b) and (d). BACKGROUND FACTS [3] The Plaintiff was appointed by the Developer, MZN Holding Sdn Bhd, as the main contractor of the project to construct thirty-five (35) units of double storey houses (20’x70’) Type A at Mukim Sedili Besar, Johor (“the Project”). [4] The Plaintiff, thereafter, appointed the Defendant as its sub-contractor to carry out the piling works of the Project (“the Piling Works”), pursuant to a Letter of Award dated 19.06.2020 (“the Letter of Award”), based on: i. Fixed rates; with ii. Provisional quantities subject to premeasurement of the Piling Works carried out. [5] The Defendant avers that the Piling Works were duly carried out and completed by the Defendant on 04.09.2020, as supervised and verified by the Plaintiff, without any issues raised by the Plaintiff at all material times. The lack of any issues with respect to the completion of the Piling Works was reflected clearly in all the Piling Records signed and stamped by the Plaintiff (“the Piling Records”). S/N jbYa5ex8EkewNYe2Qv83dg [JA-24C-9-09-2021] February 28, 2023 Before The Honourable Judicial Commissioner Ahmad Murad Bin Abdul Aziz 4 [6] Although the Piling Works had been duly completed, the Plaintiff failed to pay the amount due and owing to the Defendant. [7] The Plaintiff, on the other hand, avers that the Defendant failed to comply with the instructions given by the Architect and Engineer named in the Agreement (“the Architect and Engineer’s instructions”), which resulted in a stop work order being issued to the Plaintiff by the Plaintiff’s employer. The Plaintiff alleges that consequent to the stop work order, the interim certificates were not certified by the named Architect and Engineer. [8] The Plaintiff, consequently, withheld payment to the Defendant and informed the Defendant of its decision by a letter dated 05.05.2021. The Defendant disagreed with the Plaintiff’s contention and commenced adjudication proceeding against the Plaintiff. The Defendant then obtained an Adjudication Decision in its favour. [9] The Plaintiff, aggrieved by the decision, filed the following: