All city officials and employees receiving money payments on behalf of the city shall keep a record thereof on serially numbered receipts from a receipt billing machine, one copy of which receipt shall be given to the person making the payment and the duplicate copy of which shall be retained in a locked compartment of the billing machine. The duplicate, serially numbered copies verify the various amounts evidenced thereby against the monies turned into the office of the City Treasurer; provided however, that licenses and permits may be issued either from the billing machines or from permanently bound books with each license or permit serially numbered in duplicate or detachable from permanently bound and serially numbered receipt record stubs.
(1980 Code, § 30.901)