55 ILCS 5/5-32010
Upon the passage of any ordinance for a local improvement pursuant thereto, a petition shall be filed in the circuit court in the county where the affected territory lies praying that steps be taken to levy a special assessment for the improvement in accordance with the provisions of that ordinance. There shall be attached to or filed with this petition a certified copy of the ordinance and a copy of the recommendation of the Committee and the estimate of cost as approved. The failure to file any or either of these copies shall not affect the jurisdiction of the court to proceed in the cause and to act upon the petition, but if it appears in any such cause that the copies have not been attached to or filed with the petition, before the filing of the assessment roll therein, then upon motion of any objector for that purpose on or before appearance day in the cause the entire petition and the proceedings shall be dismissed.
55 ILCS 5/5-32010