Indiana Code Title 6. Taxation § 6-1.1-15-12.5

Sec. 12.5. (a) If a township assessor determines that the township assessor has made an error concerning:

in an assessment, the township assessor shall on the township assessor's own initiative correct the error.  However, the township assessor may not increase an assessment under this section.  The township assessor shall correct the error in the assessment without requiring the taxpayer to file a notice with the county board requesting a review of the township assessor's original assessment.

(b) If a township assessor corrects an error under this section, the township assessor shall give notice of the correction to the taxpayer, the county auditor, and the county board.