HOW TO AMEND DUPLICATE INVOICE IN GSTR-1

ASSESSEE HAD SUBMITTED GSTR-1 FOR THE MONTH OF JULY 2020 SHOWING THE SUPPLIES MADE AND TAX PAYABLE. ALL THE INVOICE DETAILS ARE SAVED AS PROVIDED BY THE SUPPLIER AND LATER ON HE FILED THE RETURN. BUT, UNEXPECTEDLY THE RETURN WAS FILED SHOWING NIL TURNOVER AND TAX PAYABLE DUE TO THE TECHNICAL GLITCH AT GST PORTAL, ALSO THE INVOICE DATA WAS NOT VISIBLE AFTER THE FILING OF RETURN GSTR-1 FOR JULY 2020. ASSESSEE THEN ENTERED THE SAME INVOICES OF JULY 2020 IN THE GSTR-1 OF AUGUST 2020 AND FILED THE SAME. HE THOUGHT THERE ENDS THE MATTER. BUT ON 12TH OCTOBER HE RECEIVED AN EMAIL STATING THAT THERE IS A TECHINAL ERROR IN THE GSTR-1 FOR THE MONTH OF JULY 2020 KINDLY RE-FILE THE SAME. SO, NOW ASSESSEE HAD RE-FILED THE RETURN GSTR-1 SINCE NON FILING LEADS TO PENAL CONSEQUENCES. NOW, COMES THE TWIST THAT THE GSTR-1 FOR THE MONTH OF AUGUST CONTAINS INVOICES FOR THE MONTH OF JULY 2020 AND ALSO JULY 2020 GSTR-1 CONTAINS SAME INVOICES. THIS HAD CAUSED DUPLICATION OF INVOICES AND RESULTANTLY SAME INVOICE WAS APPEARING TWICE IN GSTR-2A OF RECEIPIENT. KINDLY, PLEASE SUGGEST THE SOLUTION TO RECTIFY THE SAME AS THIS IS CAUSING DIFFERENCE BETWEEN TURNOVER AS PER BOOKS AND ALSO DIFFERENCE BETWEEN TAX PAYABLE AS PER GSTR-1 AND AS PER GSTR-3B.