S.C. Code Ann. § 11-3-170: Payments from State Treasury.

After the approval of the annual appropriation act by the Governor, monies may be obtained from the State Treasury only by drawing vouchers upon the Comptroller General. All vouchers, except for appropriated salaries, shall be accompanied by a classified and itemized statement of expenditures showing in each case the name of the payee and a list of articles purchased or services rendered, together with a certified statement that such articles or services were purchased or rendered exclusively for the purpose or activity for which the appropriation was made. These statements of expenditures shall be prepared on printed forms prescribed by the Comptroller General and they shall be prepared in duplicate, the copy to be retained for the purpose of assisting in the annual audit and as a permanent office record.