Gstr 3B wrongly filed

Manisa (student) (103 Points)

18 March 2020  
Dear members,

I have wrongly filed Nil Gstr 3B for Feb month, and missed to show two invoices dated Feb. The Gstr1 of the same person is quarterly so it has not been filed. So could anyone suggest me what should be done to rectify the error in Gstr 3B as till now the liability for payment arising out of the two bills has not been met.