If you've filed your GSTR-1 quarterly return showing B2C supplies but accidentally declared nil in your GSTR-3B, you cannot amend the filed return directly. The correction needs to be made in the subsequent quarter's return. You should report the supply under the applicable table in the next return and ensure that the correct tax is paid along with any applicable interest.
28 October 2023
i am Quarterly return filed GSTR1 and in GSTR1 i am showed supply B2C but i accidentally GSTR3b filed nill . now i want change it how i change this mistake