Ill. Admin. Code tit. 68, § 1335.60
c) A person seeking restoration of a license after it has expired or been placed on inactive status for more than 3 years shall file an application, on forms supplied by the Department, including the applicant's work history since the license expired and the fee required by Section 1335.20 of this Part. The person shall also submit one of the following:
d) When the accuracy of any submitted documentation or the relevance or sufficiency of the course work or experience is questioned by the Department because of a lack of information, discrepancies or conflicts in information given or a need for clarification, the applicant seeking restoration of a license shall be requested to: