5 ILCS 100/5-85
An agency may request that the Joint Committee on Administrative Rules issue a certification of correction under this subsection (b) to correct: (1) non-substantive errors such as typographical, clerical, grammatical, printing, copying or other inadvertent errors such as omission of existing or inclusion of previously repealed Illinois Administrative Code text; (2) any omissions or errors that create unintentional discrepancies between adopted rule text and text previously published in the Illinois Register or second notice rule text; or (3) any discrepancies between adopted rule text and agreements certified by the Joint Committee on Administrative Rules during the second notice period.
In requesting the Joint Committee on Administrative Rules to issue a certification of correction, the agency shall specify which of the above reasons for correction is applicable and shall submit the full affected Section of the Code, indicating both the incorrect text and the agency's proposal for correcting the error. The Joint Committee on Administrative Rules shall verify that the requested correction meets the criteria of this subsection (b), that the public interest will be served and no hardship created by remediation of the error or omission more quickly than could be accomplished by the regular rulemaking process, and that the public notice considerations of this Act are not being unduly circumvented.
Upon receiving a certification of correction from the Joint Committee on Administrative Rules, an agency shall file a notice of correction with the Secretary of State for publication in the next available issue of the Illinois Register. Pursuant to agreement between the Joint Committee on Administrative Rules and the agency, the effective date of the correction shall be identical to that of the adopted rule being corrected or a specified later date.
The agency shall take reasonable and appropriate measures to make rule corrections known to persons who may be affected by them.
5 ILCS 100/5-85