Mich. Comp. Laws § 15.185: Action of public officer or employee; validity; judicial relief or remedy.

Sec. 5.

An action of a public officer or public employee shall not be absolutely void by reason of this act. An action of a public officer or public employee shall be voidable only by discretionary action of a court of competent jurisdiction, as prescribed in section 4. However, any judicial relief or judicial remedy shall operate prospectively only.