La. Stat. tit. 39 § 234
The commissioner of administration shall prescribe the form of pay-in vouchers, which shall be the only form to be used in depositing public moneys in the state depositories. The blank forms shall be numbered and shall be issued by the commissioner of administration to collectors of revenue and to other public officers, and other persons, who receive or collect moneys on behalf of the state. The commissioner of administration shall also cause a record to be made of the numbers of the blank forms issued to each person or agency and shall hold each such person and agency accountable for each form so issued and recorded. For each deposit made in a designated depository, at least two copies of the prescribed form of pay-in voucher shall be prepared, of which one copy shall be lodged with the depository receiving the deposit and one copy shall show the date of deposit, and be signed by an agent of the depository. The depositor shall retain one of the copies so stamped and signed.
La. R.S. § 39:234