Ill. Admin. Code tit. 35, § 745.124
a) Any person who holds prior conduct certification shall provide on an annual basis a supplemental information report to the Agency which identifies change in any of the information required by Section 745.122. A person who holds prior conduct certification shall additionally, upon Agency request, provide a supplemental information report which identifies change in any of the information required by Section 745.122 prior to the first anniversary of the submission of the previous report, so long as the person has not been required to submit more than three such reports during the previous one year period.