Section 124(3) stipulates a bar to any contention about lack of jurisdiction of an AO

Issue before Court: Whether AO has lack of jurisdiction to complete the assessment. Brief facts: Assessee company was incorporated on 27.02.2003 in the name of Shalom Exim Pvt. Ltd. Later on the name was changed to Mamram Developers Pvt. Ltd. on 03.11.2003. The name of the assessee again changed to ShriShyam Sunder Infrastructure Pvt. Ltd. on 27.11.2010. For the year in concern assessee filed return on 30.05.2003. A notice u/s 148 was issued to the assessee against which assessee responded that he would like to stand by his return filed on 30.05.2003. Assessment was completed under section ...