7.So far as the levy of penalty is concerned, it is no doubt true that while issuing the pre-revision notice, the appellant was informed that penalty under Section 27(3)(ii) at 100% is also proposed to be levied for the suppression. Section 27 deals with 'assessment of escaped turnover and wrong availment of input tax credit'. In terms of sub-section (3), in making an assessment under Clause (a) of sub-section (1), the assessing authority may, if it is satisfied that the escape from the assessment is due to wilful non-disclosure of assessable turnover by the dealer, direct the dealer, to pay, in addition to the tax assessed under Clause (a) of sub-section (1), by way of penalty, which shall be sum of fifty per cent if the Assessing Authority chooses to exercise Clause (a) or one hundred per cent under Clause (b) or one hundred and fifty percent under Clause (c). Thus, for levy of penalty, under subsection (3) of Section 27, there should be finding rendered by the Assessing Authority regarding wilful non-disclosure of assessable turnover. The non-disclosure alleged against the appellant is based upon the mismatch, which was deducted in the web portal, that is, the difference noticed in the returns filed by the selling and the purchasing dealers. Despite opportunity, the appellant was not able to reconcile the mismatch not due to lack of merits, but on the ground that the purchase bills were missing on account of shifting of the business premises. This allegation has not been disputed by the Assessing Officer, nor there was any material available with the Assessing Officer to come to the conclusion that such statement was false. Nevertheless, while considering the liability to impose tax, if the appellant is unable to reconcile the mismatch of the details found in the website, the Assessing Officer has no other option except to conclude the assessment as proposed in the prerevision notice. However, the same yardstick cannot be applied for levy of penalty, where mens rea has to be established. Even while confirming the proposal in the pre-revision notice and completing the assessment vide order dated 30.06.2018, the Assessing Officer does not record any finding that the appellant was guilty of wilful suppression, but the proposal in the prerevision notice has been confirmed because, the partner of the appellant appeared before the Assessing Officer and submitted that they were unable to produce the records. In fact, the representation given by the appellant on 02.05.2018 is to the effect that there is no wilful misstatement or wilful default committed by them, but only on account of the lost of the purchase bills, they are unable to establish the genuineness of the transaction. Therefore, the case on hand is a very