By leaving the notice or document at the usual place of business of the party during normal business hours of that party; Hence, the wordings of s 38(b) of the CIPAA does not require the service of the payment claim to be done at the registered office. It would suffice if it is done [2019] 10 MLJ 58 at 66 at the respondent’s usual place of business.” [15] I would further add that on a balance of probabilities, the fact that the Adjudication Claim was served on the registered address of MH would result in MH being deemed as having notice of the Adjudication Claim and that the Adjudication proceedings have been commenced against them. It is then for MH to do the necessaries to defend their case, if any, in the Adjudication proceedings. [16] On this point I have also observed at exhibit RS – 4 in enclosure 6 of OS 192 that when the Payment Claim was served on MH, MH had appointed a lawyer, Messrs Jasbeer, Nur & Lee and through their letter dated 13.1.2023 had inter alia seeked for time to reply to the said Payment Claim but nothing further had come out of that. Once again ample opportunity was given to MH to defend their case, if any, in the Adjudication proceedings but they chose thereafter to remain silent and not taking any steps to appear at the Adjudication proceedings. This is also evidence that MH had obtained legal advice for the Adjudication proceedings but for reasons of their own did not participate in the Adjudication proceedings. [17] For the record, a perusal of the AD further shows that the Adjudicator had addressed the issue of the service of the Adjudication Claim on MH and held that it was properly served on MH. [18] As to the contention by MH that the unilateral decision by the Adjudicator is a breach of natural justice, I hold that this issue is entirely untenable and must be disallowed. It is MH who had decided not to participate in the Adjudication proceedings on their own accord due to the reasons I have given above and from a perusal of the AD in toto I do find that the Adjudicator was entirely correct to decide on the matter based on the available evidence and documents before him, which he did. See Gazzriz Sdn Bhd V Hasrat Gemilang Sdn Bhd [2016] MLJU 1054. [19] On the issue of any works which amongst others did not conform to the standard or is alleged to be defective and not fit for its purpose or that the Adjudicator did not consider the variation orders issued which MH had also alleged, I agree with counsel for Mercu and do hold that these are issues which should be brought in the Adjudication proceedings to which MH had ample opportunity to do so but had at their own peril chose not to do so. In any event these are issues of merits of the AD to which is not a ground under section 15 CIPAA to set aside the AD. [20] In the circumstances, I dismiss OS 192 with costs. [21] As there are no further impediments on the AD, I hereby allow prayers 1, 2 (a) to (d) and prayer 3 of enclosure 1 in OS 144. Dated: 21st day of March 2025 sgd. NADZARIN WOK NORDIN HIGH COURT JUDGE CONSTRUCTION COURT 1 COUNSEL FOR PLAINTIFF (OS144) / DEFENDANT (OS192): Wan Idi Amin bin Ibrahim (Messrs Idi Amin] COUNSEL FOR DEFENDANT (OS144) / PLANTIFF (OS192): Nakeeran Kumar s/o Kanthavel (Messrs Jasbeer, Nur & Lee]