(1) Revenue receipts must be issued in serial number order and must not be altered without the approval of the Accountant General.
(2) A revenue receipt book must not be cut or divided and where an electronic system is in use, measures must be taken to secure the receipt-writing device.
(3) An alteration must not be made in the amounts shown as received on a receipt.
(4) An alteration in a paying-in slip must be initialled by the payer.