Section 21E(4)(v) in Kerala General Sales Tax Rules, 1963
(v)The assessing authority making the best judgement assessment shall serve on the dealer a notice clearly specifying the irregularities or defects noticed and the manner in which the best judgement assessment is proposed to be completed. Where a pattern of suppression is detected, the pattern and the relation borne by such pattern of suppression to the estimate proposed shall be clearly made out in the notice.