S.C. Code Ann. § 36-7-507: Warranties on negotiation or delivery of document of title.

If a person negotiates or delivers a document of title for value, otherwise than as a mere intermediary under Section 36-7-508, then unless otherwise agreed the transferor, in addition to any warranty made in selling or leasing the goods, warrants to its immediate purchaser only that:

(1) the document is genuine;

(2) the transferor does not have knowledge of any fact that would impair the document's validity or worth; and

(3) the negotiation or delivery is rightful and fully effective with respect to the title to the document and the goods it represents.