(1) Notwithstanding anything contained in the foregoing provisions or chapter or in any enactment, rule, order of instrument for the time being in force and notwithstanding any custom, usage or practice to the contrary, the State Government may, if satisfied before the closing of settlement operations by a notification under sub- section (2) of Section 142 that the rent mies sanctioned under sub-section (5) of Section 156 by the State Government need modification of account of the discovery of any error or omission:-
(a) in the formation of assessment circles or assessment groups, or
(b) the classification of soil, or
(c) the evolution of rent-rates for any class of soil order that such canal one rent-rates reviewed by the Settlement Officer.
(2) The Settlement Officer shall thereupon proceed to frame his modified proposals in the prescribed manner and the provisions of Secs. 155 and 156 shall apply thereto.