R.I. Gen. Laws § 35-6-41: Refund of erroneous or excessive payments to state.

Whenever an erroneous payment or any payment in excess of the correct amount has been made to the state, the general treasurer shall refund the erroneous payment or overpayment; and the state controller, upon receipt by him or her of proper vouchers is authorized and directed to draw his or her orders upon the general treasurer for the refund of any erroneous payment or overpayment.