S.C. Code Ann. § 12-49-1230 — Collateral lists and supplements

(A) By July first of each year, each lienholder may provide a written collateral list to the tax collector of each county in which the lienholder's collateral is located. The collateral list sent to a particular county must be derived by a lienholder sorting its accounts by United States Postal Zip Codes and by sorting those zip codes by the counties that have geographical areas covered by those zip codes. The zip codes used must be those shown in the lienholder's records as the mailing addresses where the collateral is situate. For those zip codes covering geographical areas that extend into multiple counties, the collateral list sent to all counties sharing the same zip codes must contain the information required by Section 12-49-1250.
(B) Any collateral list provided by a lienholder to a tax collector after July first and no later than December thirty-first of any year is considered a supplemental collateral list for purposes of the lienholder's right to receive notice of a tax levy and sale pursuant to Section 12-49-1190 for that same calendar year.
(C) A lienholder is not required to provide to the tax collector a collateral list annually or periodically. If a particular lienholder does not provide a collateral list to the tax collector in a timely manner for the year in which the tax collector intends to sell real property on which that lienholder holds a lien, the tax collector may rely on the most current information obtained pursuant to Section 12-49-1190 including, but not limited to, a collateral list from a previous year.