S. 143(2) : Assessment – Notice – Defective return- Rectification of defects relates back to date of original return – Original return was filed on 10-09- 1996 – Defects removed on July 7, 2017- Notice u/s 143(2) was issued on August 9, 2018- Barred by limitation [ S.139 (1) 139(9) ,143(3) ]