Ill. Admin. Code tit. 44, § 1300.5540
a) Determination that Solicitation or Award Violates Law
If the CPO finds that the solicitation or proposed award is in violation of statute or this Part, the CPO may cancel the solicitation or proposed award, or make modifications to correct the violation, if such correction may be legally accomplished.
b) Determination that Contract Violated Law or Rule
Contracts based on awards or solicitations that were in violation of statute or this Part shall be terminated at no cost to the OAG.
c) Effect of Declaring a Contract Null and Void
In all cases where a contract is voided, the OAG shall endeavor to return those supplies delivered under the contract that have not been used or distributed. No further payments shall be made under the contract.