Gstr-1 wrongly filed or btob turnover not declered.

yeah its very common, you have to consider in the current month and calculate tax and interest as well and paid their of.
But one question arising in my mind that, if you do not mentioned in your GSTR 1 for the B2B transaction, then Is recipient of supplies also forget to consider while filling his return in GSTR 2 ? Definitely it happens otherwise its should not be matched between GSTR 1 vs GSTR 2A simultaneously has to be rectified with GSTR 2 vs GSTR 1A

SIR I PAID TAX 3B RETURN. BTOB TURNOVER NOT DECLERED IN GSTR-1. CAN I ADD TURNOVER NEXT MONTH GSTR-1 BTOB.   

You have already filed your GSTR1 so that in the next month of GSTR1 in table number 9 you can consider. Imp. You must inform your supplier.

ammendment option to add missing turnover is available in gstr-1. You can add it in next month.....

SIR,

      NEW BILL CAN'T BE ADD AMMENDMENT OPTION GSTR-1. ONLY FOR  FILED GST-1 INVOICE WE CAN CHANGE.