S. 271(1)(c):Penalty –Concealment -The AO cannot initiate penalty on the charge of ‘concealment of particulars of income’, but ultimately find the assessee guilty in the penalty order of ‘furnishing inaccurate particulars of income’ (and vice versa). In the same manner, he cannot be uncertain in the penalty order as to concealment or furnishing of inaccurate particulars of income by using slash between the two expressions. Such error is not procedural but goes to the root of the matter and is not saved by S. 292B. The error renders the penalty order unsustainable in law [ S.292B ]