Wis. Stat. § 950.10: Limitation on liability; grounds for appeal.

(1) No cause of action for money damages may arise against the state, any political subdivision of the state or any employee or agent of the state or a political subdivision of the state for any act or omission in the performance of any power or duty under this chapter or under article I, section 9m, of the Wisconsin constitution or for any act or omission in the performance of any power or duty under ch. 938 relating to the rights of, services for or notices to victims.

(2) A failure to provide a right, service or notice to a victim under this chapter or ch. 938 or under article I, section 9m, of the Wisconsin constitution is not a ground for an appeal of a judgment of conviction or sentence and is not grounds for any court to reverse or modify a judgment of conviction or sentence.