Certificates of error that will be presented to the court shall be filed as an objection in the application for judgment and order of sale for the year in relation to which the certificate is made or as an amendment to the objection under subsection (b). Certificates of error that are to be certified according to the procedure authorized by this Section need not be presented to the court as an objection or an amendment under subsection (b). The State's Attorney of the county in which the property is situated shall mail a copy of any final judgment entered by the court regarding any certificate of error to the taxpayer of record for the year in question.
Any unpaid taxes after the entry of the final judgment by the court or certification on certificates issued under this Section may be included in a special tax sale, provided that an advertisement is published and a notice is mailed to the person in whose name the taxes were last assessed, in a form and manner substantially similar to the advertisement and notice required under Sections 21-110 and 21-135. The advertisement and sale shall be subject to all provisions of law regulating the annual advertisement and sale of delinquent property, to the extent that those provisions may be made applicable.
A certificate of error certified under this Section shall be given effect by the county treasurer, who shall mark the tax books and, upon receipt of one of the following certificates from the county assessor or the county assessor and the board of review where the board of review is required to endorse the certificate of error, shall issue refunds to the taxpayer accordingly:
"CERTIFICATION
I, .................., county assessor, hereby certify that the Certificates of Error set out on the attached list have been duly issued to correct an error or mistake in the assessment."
"CERTIFICATION
I, .................., county assessor, and we, ........................................................, members of the board of review, hereby certify that the Certificates of Error set out on the attached list have been duly issued to correct an error or mistake in the assessment and that any certificates of error required to be endorsed by the board of review have been so endorsed."
The county treasurer has the power to mark the tax books to reflect the issuance of certificates of error certified according to the procedure authorized in this Section for certificates of error issued under Section 14-25 or certificates of error issued to and including 3 years after the date on which the annual judgment and order of sale for that tax year was first entered. The county treasurer has the power to issue refunds to the taxpayer as set forth above until all refunds authorized by this Section have been completed.
To the extent that the certificate of error obviates the liability for nonpayment of taxes, certification of a certificate of error according to the procedure authorized in this Section shall operate to vacate any judgment or forfeiture as to that year's taxes, and the warrant books and judgment books shall be marked to reflect that the judgment or forfeiture has been vacated.
35 ILCS 200/14-15