in the billing systems; - accuracy of calculation of amounts billed to customers; and - recording of revenue transactions; • Tested the billings and revenue adjustments on a sampling basis to assess whether the revenue recognised and revenue adjustments are valid and recorded accurately; and • Examined the correspondence with the Energy Commission and assessed whether there were any material matters that would affect revenue recognition. Based on the above procedures performed, we did not find any material exceptions. Reinvestment allowance (‘RIA’) claims Refer to Note 4 – Critical Accounting Estimates and Judgements and Note 42 - Contingent Liabilities and Material Litigations The Inland Revenue Board (‘IRB’) had disallowed the Company’s RIA claims for the Years of Assessment (‘YAs’) 2013, 2014, 2015, 2016, 2017 and 2018 and had issuednotices of additional assessments (‘Notices’) to the Company, amounting in aggregate to RM7,858.6 million. As at 31 December 2023, the Group and Company recorded a tax recoverable of RM3,522.4 million and have not recorded the potential tax liabilities of RM6,101.4 million arising from the tax impact if the RIA claims are disallowed and the Company loses its appeal. Based on the legal advice obtained from its tax solicitors on the merits of the cases, the Directors are of the opinion that no provision is required in the financial statements for the potential tax liability up to the reporting date. We focused on this area due to the inherent uncertainties involved in the outcome of judgement on the RIA by the Special Commissioners of Income Tax and by the Kuala Lumpur High Court, including the subsequent notice of appeal filed by the IRB before the Court of Appeal. We performed the following audit procedures: • Evaluated the Directors’ assessment on the basis of recoverability of the tax recoverable of RM3,522.4 million in respect of RIA and the potential tax liabilities of RM6,101.4 million in respect of RIA by the IRB by assessing the independent legal confirmations obtained from