If you've accidentally submitted your GSTR-1 for April 2021 without filling in the HSN wise summary table, don't worry. Since GSTR-1 cannot be revised after submission, the recommended approach is to include the missing HSN details from April in your May 2021 GSTR-1 return. This allows you to report the information cumulatively in the next filing period.
23 May 2021
Sir/Madam please provide guidance. GSTR-1 Of April 2021 submitted but not filed yet. By mistake HSN wise summary table has been left blank. Now cannot add details of HSN. What should be done please guide. Thanks in advance.