S.C. Code § 30-13-30
When Sections 30-13-10 and 30-13-20 shall have been complied with and any such record as is therein mentioned is made in the county in which a member of any such association resides such record shall operate as constructive notice of the existence of such contract or agreement and of the terms thereof and all persons contracting or dealing with any such member in relation to any such produce covered by such contract or agreement shall be bound thereby and all rights or liens acquired by any such person in such produce subsequent to the date of such record shall be subject in all respects to the rights of the association under such contract or agreement. But if any agricultural produce covered by such contract is sold at public auction or on a warehouse floor, the warehouseman or purchaser shall not be liable for any damages provided to be paid by any member in such contract unless actual notice is given in writing before settlement that the produce sold or offered for sale belongs to a member of the association.
S.C. Code § 30-13-30