Synopsis As Introduced Amends the Property Tax Code. Provides that the board of review in a county with 3,000,000 or more inhabitants shall issue a certificate of error if the board of review determines that an error or mistake, other than an error of judgment as to the valuation of the property, has been made in the assessment of the property. Provides that the certificate may be used in evidence in any court of competent jurisdiction. Provides that copies of the certificate shall be given to the county clerk and the county treasurer.