Wash. Admin. Code § 230-16-187
Holders of a manufacturer's special sales permit must keep and maintain a complete set of records for their permitted activity. They must, at least:
(1) Keep a:
(a) Cash disbursements book (check register) - Permit holders must document all expenses, both gambling and nongambling related, with invoices or other appropriate supporting documents. They must enter information monthly and include, at least:
(b) Cash receipts - Permit holders must keep a record of cash sales and cash received from all sources. They must enter information for each payment received monthly and include, at least, the:
[Statutory Authority: RCW 9.46.070(4). WSR 14-15-130 (Order 701), § 230-16-187, filed 7/22/14, effective 1/1/15.]