48. A permit holder must keep, in a file for each debtor, the following:(a) a copy of vouchers for any debt to be collected from the debtor where those vouchers were provided to him by the creditor;
(b) for each debt to be collected from a debtor, a copy of the writings or documents referred to in paragraphs g, h, i, j, k, l, n, o, p and q of section 47.