S.C. Code Ann. § 15-39-790

If no objection as to the price at which the property may have been sold by the judgment debtors shall be made in writing by either of the judgment creditors and filed with the sheriff within three months from and after the time such payment shall have been made, the sale shall thereupon be considered confirmed, and the sheriff shall make the following endorsement on the back of the deed of conveyance, viz.: "No objection having been filed in my office to the within bargain and sale within the time prescribed by law this bargain and sale is therefore confirmed." Such endorsement shall be dated and signed officially by the sheriff.