No alcoholic beverages shall be delivered to a Retail Spirit, Retail Beer, Retail Wine, Beer and Wine, Mixed Beverage, Caterer or Special Event licensee by a licensed Wine and Spirits Wholesaler, Beer Distributor, Small Brewer Self-Distributor, Brewpub Self-Distributor or Winemaker Self-Distributor, his agent, servant or employee without receiving payment therefore at the time of making such delivery, or payment having been made by said Retail Spirit, Retail Beer, Retail Wine, Beer and Wine, Mixed Beverage, Caterer or Special Event licensee prior to such delivery.
Okla. Admin. Code § 45:10-3-13