Indiana Code Title 27. Insurance § 27-1-24.2-2

(1) is duplicative because the pharmacy or pharmacist has already been paid for the services;  or

(2) was erroneously paid because the services were not rendered in accordance with the prescriber's order, in which case only the amount paid for the portion of the prescription that was filled incorrectly or in excess of the prescriber's order is deemed an actual overpayment.