(A) The governing bodies of the members of a joint system shall form an agreement specifying the number of commissioners to govern the joint system pursuant to Section 6-25-60. (B) The proposed members of a joint system shall jointly file an application with the Secretary of State setting forth: (1) the names and number of all proposed members of the joint system, the number of proposed commissioners, and the method of appointment pursuant to Section 6-25-60(B); (2) a certified copy of a resolution of each member determining it is in its best interest to participate in the proposed joint system; (3) the desire that the joint system be organized as a public body corporate and politic under this chapter; (4) the name which is proposed for the joint system; and (5) 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 filed, the Secretary of State shall issue a corporate certificate that 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 name of the joint system. There also must 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, 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.