S.C. Code § 15-35-640
Notice of the application, accompanied with copies of the papers upon which it is made, must be served upon the judgment creditor or his attorney of record in the judgment, in the same manner as provided in the rules of the circuit courts of this State for the service of process, if the residence or place of business of such creditor or his attorney is known. But if such residence or place of business is unknown and cannot be ascertained after due diligence or if such creditor is a nonresident of this State and if his attorney is dead, removed from or cannot be found within the State, upon proof of such facts by affidavit, a judge of the court may make an order that the notice of such application be published in a newspaper designated therein once a week for not more than three weeks. Such publication, shown by the affidavit of the publisher, shall be sufficient service upon such judgment creditor of the application.
S.C. Code § 15-35-640