S.C. Code Ann. § 27-31-120

Each apartment must be designated, on the plans referred to in SECTION 27-31-110, by letter or number or other appropriate designation and any conveyance, lease, or other instrument affecting title to the apartment, which describes the apartment by using the letter or number followed by the words "in Horizontal Property Regime," is deemed to contain a good and sufficient description for all purposes. Any conveyance or lease of an individual apartment is deemed to also convey or lease the undivided interest of the owner in the common elements, both general and limited, appertaining to the apartment without specifically or particularly referring to same.