No sum may be credited as S«tions 143 and revenue, unless it has actually been realized. The c~dit must follow and not l93 precede the actual realization .
. 49,' Re.funds of revenue.- The refund of money collected or credited into Sections 143 and the Fund by mistake shall be made only on thc:jemand of the person enti.tled 193 to receive the money after producing proper authority and on no account shall be drawn on the rec eipt of the Executive Officer oc the Chief Executive Officer and kept in the departmental Chest.
(2) Before admitting any demand for refund of such money, the original credit in the Cash Book must be traced or receipt duly linked and an entry ~hould distinctly be made in these documents of the sum ordered to be refunded so as to guard against double or erroneous entertainment of a second claim.
When tax or fee is to be refunded a cross reference against the concerned entry shall also be given in the Demand and Collection Register.