S.C. Code Ann. § 61-6-2920

Before shipment to a wholesaler in this State or to any point outside the State, the producer representative must mail to the department a correct and complete copy of the invoice covering the shipment, listing the name and address of the consignee and, in detail, the items in the shipment by quantity, type, brand, size, and price. On all shipments to a point outside this State, the producer representative must at the time of shipment mail to the department a copy of the bill of lading.