S.C. Code § 6-16-50
Upon fulfilling the requirements set forth in Section 6-16-40, each governing body which determines that its participation in the proposed joint agency is in its best interest shall by resolution appoint one representative to the proposed joint agency. Any two or more representatives shall file with the Secretary of State an application signed by the representative of each proposed member setting forth:
The Secretary of State shall file the application if after examining it and determining that it complies with the requirements set forth above and that the proposed name of the joint agency is not identical with that of any other corporation of the State or any agency or instrumentality or so nearly similar as to lead to confusion and uncertainty.
After the application has been made and filed, the Secretary of State shall issue a corporate certificate which shall be filed with the application and the joint agency shall then be constituted a public body corporate and politic under the name proposed in the application. The corporate certificate shall set forth the names of the members and the name of the joint agency. Notice of the issuance of such corporate certificate shall be given to all members of the joint agency by the Secretary of State.
In any suit, action or proceeding involving the validity or enforcement of, or relating to, any contract of a joint agency, the joint agency in the absence of establishing fraud shall be conclusively deemed to have been established in accordance with the provisions of this chapter upon proof of the issuance of the certificate by the Secretary of State. A copy of such certificate, duly certified by the Secretary of State, shall be admissible in evidence in any such suit, action or proceeding and shall be conclusive proof of the filing and contents.
S.C. Code § 6-16-50