My client has raised supply invoices in the previous FY 17-18 - but his part-time accountant omitted to enter the values/particulars in GSTR 3B / 1 - But they have paid the tax due in relation thereto in May 18 in the next FY 18-19. Now one of the buyers is refusing to pay the GST amount since the purchase (my client's sale) is not reflected in his GSTR 2A.
Now please advise as to how my client can rectify his returns for the FY 17-18 now for including the omitted turnover. Is my understanding that there is no provision in GST for revision of returns? What are the options available to my client to regularise his GST returns for the FY 17-18 at this point
Note: My client is prepared to pay the service charges if for the advise