S.C. Code Ann. § 38-43-110
An agent's license is for an indefinite term unless revoked, suspended, or terminated. If the biennial license fee for an agent is not paid at the time and in the manner the department provides by regulation, the license must be canceled. If the license is to be reinstated, an original application must be filed and a reinstatement fee equal to the biennial license fee unpaid must be paid in addition to the regular biennial license fee.