(a) This article constitutes the exclusive remedy for any tort committed by a state officer or employee. A state officer or employee who commits a tort while acting within the scope of his or her official duties or employment is not subject to lawsuit or liability therefor. However, nothing in this article shall be construed to give a state officer or employee immunity from suit and liability if it is proved that the officer's or employee's conduct was not within the scope of his or her official duties or employment.

(b) A person bringing an action against the state under the provisions of this article must name as a party defendant only the state government entity for which the state officer or employee was acting and shall not name the state officer or employee individually. In the event that the state officer or employee is individually named for an act or omission for which the state is liable under this article, the state government entity for which the state officer or employee was acting must be substituted as the party defendant.

(c) A settlement or judgment in an action or a settlement of a claim under this article constitutes a complete bar to any further action by the claimant against a state officer or employee or the state by reason of the same occurrence.