Can not carry forward loss after due date - u/s 143(1)(a)(II) - AY 20-21

A taxpayer filed their ITR3 on the extended due date of 10th January 2021 for AY 20-21, including carry-forward losses. They received a notification under Section 143(1)(a)(II) stating losses cannot be carried forward as the return wasn't filed by the due date. The discussion clarifies that filing by 10th January 2021 should indeed allow loss carry-forward, and the issue might stem from the return being incorrectly marked as belated. The user is seeking ways to revise the return.