Accounts and records: registered persons must maintain prescribed business accounts, permit electronic records and undergo audits where required. Every registered person must maintain true and correct accounts at the principal place of business covering production, supplies, stock, input tax credit, output tax and other prescribed particulars; accounts for each specified place must be kept there and may be electronic. Warehouse operators and transporters must maintain prescribed consignor and consignee records. The Commissioner may require additional accounts or permit alternate recordkeeping for specified classes. Turnover-above-limit taxpayers must obtain statutory audits and submit audited accounts and reconciliation statements. Failure to account for supplies permits determination of tax on unaccounted supplies and application of recovery provisions mutatis mutandis.