S.C. Code Ann. § 48-27-230: Endorsement of documents by registrants; illegal endorsements.

Plans, maps, specifications, and reports issued by a registrant must be endorsed with his name and license number. It is unlawful for a person to endorse any documents after his license has expired or has been revoked. It also is unlawful for a registered forester to endorse any plan, specification, estimate, or map unless he has actually prepared the plan, specification, estimate, or map or has been in actual charge of its preparation.

A person who violates the provisions of this section is guilty of a misdemeanor and, upon conviction, must be fined in the discretion of the court or imprisoned not more than two years, or both.