Ill. Admin. Code tit. 62, § 245.200
b) The registration form:
1) shall require the following information (Section 1-35(a) of the Act):
d) Within 21 days after the receipt of a registration form, if the Department determines that the registration form is compliant with the requirements of subsection (b) and the person submitting the registration form is properly registered as a permittee under the Illinois Oil and Gas Act, then the registration form shall be accepted and the Department will provide the registrant with:
2) the date the registration was accepted; and