S.C. Code Ann. § 61-6-2910: Invoices covering shipments into State.

Before shipment into this State, the registered producer must mail to the department by first-class mail a correct and complete invoice listing in detail the items in the shipment by quantity, type, brand, size, price; the point of origin; and the point of destination. Before or at the time of shipment, a copy of the bill of lading must be forwarded to the department by first-class mail.

Immediately upon acceptance of delivery of the shipment by the producer representative, the producer representative must furnish the department with a copy of the invoice covering the shipment with endorsement thereon showing the date, time, and place delivery was accepted.