(a) Any funds deposited in the state treasury under this subchapter by the commission by mistake of fact or mistake of law shall be refunded by warrant issued against the fund and credited against the account in the state treasury into which the money was deposited. Refunds necessary to make the proper correction shall be appropriated by the General Appropriations Act.
(b) The comptroller may require written evidence from the executive director of the commission to indicate the reason for the mistake of fact or law before issuing the refund warrant authorized by Subsection (a).
(c) This section does not apply to any funds that have been deposited under a written contract.