S.C. Code § 12-21-1550
Prior to shipment into the geographic boundaries of South Carolina to a licensed wholesaler of any beer or wine by a registered producer, the registered producer shall mail by first class mail to the Department of Revenue a correct and complete invoice, showing in detail the items in such shipment by quantity, type, brand and size and the point of origin and the point of destination. Also, prior to or at the time of shipment, a copy of the bill of lading shall be forwarded to the Department of Revenue by first class mail. Upon acceptance of delivery of the shipment by the duly licensed wholesaler, the wholesaler shall furnish the Department of Revenue with a copy of the invoice covering the shipment, with endorsement thereon showing the date, time and place delivery was accepted.
S.C. Code § 12-21-1550