S.C. Code Ann. § 22-9-100

Every constable with whom an execution is lodged for collection shall proceed forthwith to execute it according to its exigency, unless ordered by the party in whose favor it was issued to wait. Every execution shall be returned to the magistrate by whom it was issued within sixty days from date of its issue and the constable making such return shall set forth the full execution thereof or the reasons for his failure.