it is only if the adjudicator goes off on a frolic of his own, that is wishing to decide a case upon a factual or legal basis which has not been argued or put forward by either side, without giving the parties an opportunity to comment or, 44 where relevant put in further evidence, that the type of breach of the rules of natural justice with which the case of the Balfour Beatty Construction case was concerned comes into play. It follows that, if either party has argued a particular point and the other party does not come back on the point, there is no breach of the rules of natural justice in relation thereto” (emphasis added) [96] In SEF Construction Pte Ltd v Skoy Connected Pte Ltd [2010] 1 SLR 733 (HC), SEF Construction Pte Ltd applied to set aside the adjudication application on the ground that the adjudicator had breached the rules of natural justice by failing to consider SEF’s submissions on two out of the four jurisdictional issues. Judith Prakash J (now JA) at paragraphs [58] and [59] held that: “[58] Having given this question somewhat anxious consideration since affording natural justice is a fundamental requirement of the adjudication procedure, I have decided that the Adjudicator’s failure to discuss the submissions in his Adjudication Determination was not a breach of natural justice. In coming to this conclusion I was fortified by the views of Dyson J and the AR quoted above (at [51]-[52]). I also found useful and practical guidance from the Australian cases, notwithstanding their 45 references to good faith which is a concept that I have found not to be applicable in Singapore. ... [59] The following passage of the judgment of Palmer J in Brookhollow Pty Ltd v R&R Consultants Pty Ltd [2006] NSWSC 1 was particularly useful: 57 Where both claimant and respondent participate in an adjudication and issues are joined in the parties’ submissions, the failure by an adjudicator to mention in the reasons for determination a critical issue (as distinct from a subsidiary or non-determinative issue) may give rise to the inference that the adjudicator has overlooked it and that he or she has therefore failed to give consideration to the parties’ submissions as required by s 22(2)(c) and (d). Even so, the adjudicator’s oversight might not be fatal to the validity of the determination: what must appear is that the adjudicator’s oversight results from a failure overall to address in good faith the issues raised by the parties. 58 In some cases, it may be possible to say that the issue overlooked was of such major consequence and so much to the forefront of the parties’ submissions that no adjudicator attempting to address the issues in good faith could 46 conceivably have regarded it as requiring no specific examination in the reasons for determination. In other cases, the issue overlooked, although major, may be one of a large number of issues debated by the parties. If the adjudicator has dealt carefully in the reasons with most of those issues, it might well be a possibility that he or she has erroneously, but in good faith, omitted to deal with another major issue because he or she did not believe it to be determinative of the result. Error in identifying or addressing issues, as distinct from lack of good faith in attempting to do so, is not a ground of invalidity of the adjudication determination. The Court must have regard to the way in which the adjudication was conducted and to the extent and content overall of the adjudicator’s reasons: the Court should not be too ready to infer lack of good faith from the adjudicator’s omission to deal with an issue when error alone is a possible explanation. (emphasis added) [97] Whatever may be the reason for the Adjudicator’s omission to state categorically his decision on the Discovery Application, there was no breach of natural justice. Natural justice requires that the parties 47 should be heard; it does not require that they be given responses and determinations on all submissions made. See the case of AM Associates (Singapore) Pte Ltd v Laguna National Golf and Country Club Ltd [2009] SGHC 260. Whether the Adjudicator had acted in excess of his jurisdiction when he decided on a lesser sum admitted by the Defendant as the non-paying party when the Defendant had earlier in their Payment Response had cross-claimed for overpayment [98] It is trite that the jurisdiction of the Adjudicator is confined to the matters contained in the Payment Claim and Payment Response. This can be seen from Section 27(1) CIPAA: “27. Jurisdiction of Adjudicator 1) Subject to subsection (2), the adjudicator’s jurisdiction in relation to any dispute is limited to the matter referred to adjudication by the parties pursuant to sections 5 and 6. (emphasis added)” [99] In View Esteem Sdn Bhd v Bina Puri Holdings Sdn Bhd [2015] MLJU 695, at para [66], Mary Lim J (now JCA) held that: “[66] With respect, the Court finds these concerns misplaced. It may be said that by virtue of subsection 27(1), the Payment 48 Claim and the Payment Response is to adjudication what pleadings are to civil litigation. Parties are bound by their pleadings under the rules of procedure in civil litigation; in adjudication, those pleadings are to be found in the Payment Claim and the Payment Response; and not in the Adjudication Claim, Adjudication Response or the Adjudication Reply." (emphasis added) [100] The above decision has been affirmed by the Court of Appeal in View Esteem Sdn Bhd v Bina Puri Holdings Bhd [2016] 6 MLJ 717. [101] Learned counsel for the Plaintiff submitted that based on the established legal principles, the matters and documents that were not referred to in the Payment Response must not be considered by the Adjudicator. He then referred to paragraphs 107-108 of the Decision where the Adjudicator made specific reference to the revised certificates that were not referred to in the Payment Response and accepted the amount therein. He urged the Court to conclude that in view of the above, the Adjudicator had clearly acted in excess of his jurisdiction. [102] In the Payment Response filed the Defendant as Respondent in the Adjudication had denied owing the amount claimed by the Plaintiff/Claimant and had in fact cross-claimed the amount of RM16,740.71 being overpayment to the Claimant. 49 [103] In the Adjudication Response filed by the Defendant, the Defendant abandoned the cross claim and admitted that upon a proper calculation under a re-measurement of the actual works executed pursuant to the express provision of Clause 3.2 of the Contract there is a sum of RM29,791.73 due and payable to the Plaintiff after a review of the quantities of works done. The Defendant admitted there was an inadvertent mistake in the Certificate of Payment No. 11 where an additional sum of RM13,504.41 for variation orders nos. 2(R), 5, 6 and 7 were omitted by them. [104] This payment took into account the balance of payment for Certificate of Payment No. 10, Certificate of Payment No. 11 (Revised) and Certificate of Payment No. 12 as explained in Part D of the Adjudication Response. Since the original Contract Sum had been revised to RM936,167.81 after the re-measurement, the Defendant did not need to make any further payment to the Plaintiff/Claimant, except for the sum of RM29,791.73. [105] There is nothing improper in abandoning a cross claim made in a Payment Response. The Payment Response had nevertheless denied the amount owing to the Plaintiff as Claimant. There is equally nothing improper in now conceding at the Adjudication Response stage that the amount owing is for a lesser sum than what the Claimant has claimed. 50 The Defendant admitted to a sum of RM29,791.23 owing to the Plaintiff as Claimant. [106] It is within the jurisdiction of the Adjudicator, in the light of the concession and admission made, to then ascertain what is the actual amount owing to the Plaintiff/Claimant by the Defendant/Respondent. The Adjudicator had not transgressed outside the Payment Claim and the Payment Response because the Adjudicator rightly understood his jurisdiction to determine the amount owing to the Claimant for the construction work done. [107] The rules of pleading must not be made more stringent in Adjudication than in Litigation. If in a Court of law, a defendant is allowed to make concession and admission at the trial when in its Defence it had denied the whole sum claimed and even put in a counterclaim, I see no good reason why in an Adjudication the same concession and admission cannot be made by the Respondent non-paying party and even to abandon its cross claim altogether. [108] The Adjudicator would still have to decide based on the evidence adduced, as to whether the Claimant is entitled to the whole of its claim and if not, how much of the claim as may have been proven. In this case, the Adjudicator was satisfied, for the reasons given, that the 51 amount owing is as admitted by the Defendant from the re-measurement done and the revised Certificate and the final Certificate issued. [109] Whilst it is true that the Defendant had revised its Certificate of Payment No. 11 and had also issued its final Certificate of Payment No. 12 for the release of the 2nd moiety Retention Sum on 23.6.2016 yielding a sum of RM29,791.23 owing to the Claimant, the Adjudicator is not obliged to accept this sum ipso facto or unquestioningly. [110] The Adjudicator is entitled to look at the fresh concession and admission and see whether the Payment Claim is nevertheless supported by the evidence before him. He has vast powers under section 25(m) to review and revise any certificate issued or to be issued and any valuation of the parties. In other words, even if the Defendant had not made those concession and admission, the Adjudicator is entitled to exercise his vast powers under section 25(m) and (n) CIPAA to review and revise any certificate issued or to be issued and any valuation arising out of the re-measurement exercise suggested by him as the factual matrix of the dispute may demand. Section 25(m) and (n) CIPAA provide that: “25. The adjudicator shall have the powers to- 52