S.C. Code Ann. § 6-25-50
Upon fulfilling the requirements set forth in Section 6-25-40, if applicable each governing body which determines that its participation in the proposed joint system is in its best interest shall by resolution appoint one representative to the proposed joint system. Any two or more representatives shall file with the Secretary of State an application signed by the representative of each proposed member setting forth:
(e) the purpose for creation of the joint system.
The Secretary of State shall file the application if after examining it and determining that it complies with the requirements in this section and that the proposed name of the joint system 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 must be filed with the application, and the joint system then must be constituted a public body corporate and politic under the name proposed in the application. The corporate certificate shall set forth the names of all voting members and of the name of the joint system. There must also be stated upon the corporate certificate the purpose for which it has been created, as set forth in the application. Notice of the issuance of such corporate certificate must be given to all members of the joint system 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 system, the joint system in the absence of establishing fraud shall be conclusively considered 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 the certificate, duly certified by the Secretary of State, is admissible in evidence in any suit, action, or proceeding and is conclusive proof of the filing and contents.