(1) A payment instrument in respect of a claim for reimbursement or an allowance must be certified in the manner specified under subregulation (2) by the person filing the claim.
(2) A payment instrument under subregulation (1) may be certified as follows—
(a) in the case of an ordinary claim, “Certified Correct”;
(b) in the case of transport allowance, “I hereby certify that vehicle No. has been maintained in running orderduring the period for which allowance is claimed”;
(c) in the case of subsistence allowance, “I hereby certify that was travelling on duty on the days specified and I am satisfied that the amount claimed in respect of the distance travelled is fair and reasonable”;
(d) in the case of claims where supporting receipts or invoices are not obtainable, “I .... hereby certify that the following charges have been incurred solely on the public business, and that the receipts/invoices being unobtainable.