S. 40A (2) : Expenses or payments not deductible—Excessive or unreasonable-Burden of proof on Revenue to show that expenditure was Excessive-The Assessing Officer is duty-bound to provide an opportunity to the assessee to place on record the requisite evidence to justify its claim Matter remanded to the file of the Assessing Officer-Directed to issue fresh notice and decide in accordance with law. [S. 40A(2)(a)), 40A(2)(b), 260A]