Except as specifically provided in this chapter, no changes in, additions to or deductions from, the real property tax assessments on the assessment lists prepared as provided in § 8-2.2 shall be made except to add thereto property or assessments which may have been omitted therefrom, or to deduct therefrom adjustments on account of duplicate assessments and clerical errors, such as transposition in figures, typographical errors, and errors in calculation.
(Sec. 8-1.20, R.O. 1978 (1983 Ed.)) (1990 Code, Ch. 8, Art. 1, § 8-1.17)