demonetization period. - 4 - ITA No. 166 of 2025 4.1 The assessment order records that a survey under Section 133A of the I.T. Act was conducted on 27.09.2016 and that, pursuant thereto, the assessee, by letter dated 29.09.2016, volunteered to offer a sum of Rs.1,14,20,100/- as additional income. The notice under Section