Wis. Stat. § 775.10: State party defendant; judgment.

The state may be made a party defendant in any action for a declaration of interests under s. 841.01 or between other parties, when necessary to the proper determination of their rights. The complaint shall set forth with particularity the nature of the interest or lien of the state. But no judgment for the recovery of money or personal property or costs shall be rendered in any such action against the state.