S.C. Code Ann. § 12-49-1150

To entitle a mortgagee to the notice required by Section 12-49-1120, a list of each mortgage located in the county as to which the notice is desired must be filed by the mortgagee with the tax collector of the county in which the real property covered by a mortgage lies on or before the fifteenth day of March of each year, on which must be shown the name and address of the mortgagee, the name of each mortgagor, and the book and page of the record where each mortgage listed is recorded and the tax map number.