S. 271(1)(c): Penalty-Concealment-Transfer pricing adjustment-Application of filters and selection of comparables are debatable issues-not ground for levy of penalty-suo-moto disallowance of provision for doubtful debts-tribunal directed the ao to withdraw disallowance after verification-as addition did not survive-cancellation of penalty justified-denial of deduction u/s 10a-proposed in draft assessment order but deleted by drp-deduction allowed in full in final assessment order-penalty does not survive.