My client had filed GSTR1 in FY 17-18 without filling the details of Documents Issued in Table 13.
They now need to amend the B2B data for some invoices of FY 17-18, due to errors.
I am unable to amend any B2B Invoices in Table 9 of GSTR 1.
Is there a way to add the Invoice numbers in the already filed GSTR1 of 17-18?
Please assist.