S.C. Code Ann. § 12-28-1140

Each application for a license under this chapter must be made upon a form prepared and furnished by the department. It must be subscribed to by the applicant and may contain the information the department reasonably may require for the administration of this chapter, including the applicant's federal identification number and, with respect to the applicant for an exporter's license, a copy of the applicant's license to purchase or handle motor fuel subject to the user fee user fee-free in the specified destination state for which the export license is to be issued.