Ind. Code § 5-28-15-17

Sec. 17. The state pledges to and agrees with the direct recipient of any enterprise zone incentive under this chapter that the state will not limit or alter the rights vested in the U.E.A. to fulfill the terms of any agreements it makes with those recipients or in any way impair the rights and remedies of those recipients until the terms of the incentive are fulfilled. The board may include this pledge and agreement of the state in any agreement it makes with the recipient.