Michigan Compiled Laws, Chapter 600. Revised Judicature Act of 1961 § 600.4358

(1) Where the jurisdiction of the court or officer has been exceeded, either as to matter, place, sum or person;

(2) Where, though the original imprisonment was lawful, the party is entitled to be discharged;

(3) Where the process is void;

(4) Where the process, though in proper form, has been issued in a case not allowed by law;

(5) Where the person having the custody of the prisoner is not the person empowered by law to detain him; or

(6) Where the process is not authorized by any judgment, order or decree of any court, nor by any provision of law.