S.C. Code Ann. § 29-3-430

If the parties so served with the petition and rule shall not attend to show cause or, attending, shall fail to show sufficient cause and the court or judge shall be satisfied that the debt or obligation secured by the mortgage has been fully paid, satisfied, discharged, released or extinguished or that the lien of the mortgage has been released, discharged or extinguished, the court or judge shall thereupon, by an appropriate order, direct the proper officer to satisfy and cancel the mortgage or the record thereof or to release the lien of the mortgage upon the record thereof, as the case may be.