Ill. Admin. Code tit. 44, § 8.5620
a) Determination that Solicitation or Award Violates Statute or Rule
If CDB determines or suspects that the solicitation or proposed award is in violation of statute or rule, it shall report the circumstances to the CPO or SPO. If the CPO or the SPO finds that the solicitation or proposed award is in violation of statute or rule, he or she shall report the circumstances to CDB and the CPO or SPO may cancel the solicitation or proposed award, or make modifications to correct the violation, if the correction may be legally accomplished.
b) Determination that Contract Violates the Code or this Part
c) Effect of Declaring a Contract Null and Void
In all cases in which a contract is voided, the State agency shall endeavor to return those supplies delivered under the contract that have not been used or distributed. No further work shall be performed under the contract. Resolution of any outstanding invoices related to the contract are subject to approval by the CPO.