S. 149: Reassessment-Limitation-Notice for assessment year 2015-16 deemed notice under section 148A(b) per Ashish Agarwal (SC)-Fresh notice under section 148 required within balance period per UOI v. Rajeev Bansal (2024) 469 ITR 46 (SC)-Department had 15 days but issued notice after 34 days-Notice void ab initio-Reassessment quashed. [S. 147, 148, 148A(b), 148A(d)]