Corporation's certificate of non-forum shopping

What are the requirements for a non-forum shopping certification by a corporation?

Only individuals vested with authority by a valid board resolution may sign the certificate of non-forum shopping in behalf of a corporation. In addition, the Court has required that proof of said authority must be attached. Failure to provide a certificate of non-forum shopping is sufficient ground to dismiss the petition. Likewise, the petition is subject to dismissal if a certification was submitted unaccompanied by proof of the signatory's authority. (Philippine Airlines, Inc. vs. FASAP, January 24, 2006)

However, subsequent submission of Secretary’s Certificate is substantial compliance with the requirement that a Board Resolution must authorize the officer executing the non-forum certification on behalf of the corporation.  (International Construction Inc. vs. Feb Leasing and Financing Corp., April 22, 2005)