Mich. Comp. Laws § 449.1204

Sec. 204. (a) Each certificate required by this article to be filed in the office of the administrator shall be executed in the following manner: (1) An original certificate of limited partnership shall be signed by all partners named in the certificate. (2) A certificate of amendment or a restated certificate of limited partnership shall be signed by at least 1 general partner and by each other partner designated in the certificate as a new partner or whose contribution is described as having been increased. (3) A certificate of cancellation shall be signed by at least 1 general partner. (b) Any person may sign any certificate required or permitted to be filed under this act by an attorney in fact. (c) The execution of a certificate by a general partner constitutes an affirmation under the penalties of perjury that the facts stated in the certificate are true.