S.C. Code Ann. § 58-11-160

The Office of Regulatory Staff may, in its discretion, subject to approval of the commission, prescribe systems of accounts to be kept by radio common carriers subject to its jurisdiction, and it may prescribe the manner in which the accounts shall be kept, and may require every radio common carrier to keep its books, papers, and records accurately and faithfully according to the system of accounts as prescribed by the Office of Regulatory Staff; provided, however, that nothing in this section shall be construed to be in conflict with or in violation of the provisions of the Communications Act of Congress of 1934, as amended (U.S.C.A. Title 47, Sections 151 through 609), nor shall they be construed to be in conflict with any lawful order of the Federal Communications Commission issued pursuant to the authority invested in it by such act of Congress.