Ill. Admin. Code tit. 86, § 5000.310
1) Form of Petition. The petition shall contain or identify:
A) the name, address, and telephone number of the petitioner;
E) the years or periods involved;
G) the relief sought by the petitioner;
2) Filing and Service of Petition.
4) Corrected Petitions.
A) When the petition filed by a petitioner is not in the form required by this Section, the clerk shall promptly return it to the petitioner together with a statement indicating each requirement with which the petition does not comply, and extend to the petitioner an additional 30 days within which to file a corrected petition with the Tribunal. When the clerk determines that the corrected petition is in proper form, the clerk shall then acknowledge receipt of the corrected petition and forward the acknowledgment and the corrected petition to the Department pursuant to subsection (a)(2).
For purposes of the time limitations for filing and service of a petition, a corrected petition is deemed to have been filed and served at the time the original petition was filed and served. However, the time within which the Department must answer the corrected petition shall start to run from the date of its receipt of the Tribunal's notification that the taxpayer has filed a corrected petition in the proper form.
b) Answer.
2) Form of Answer. The answer as filed shall contain numbered paragraphs corresponding to the petition and shall contain: