sir from my end I made a big mistake it worth a lot to me.  In the financial year 2017-2018 and the month of September 2017, I upload an invoice serial no is 1 to the GST portal but by mistake, I tick the supply under reverse charge in the gstr1. the supply is made to the registered person. the 3B RETURN of this month is filed correctly.    the amount of invoice is also very large, the tax on this invoice is 350000. the recipient takes the credit also in GSTR-3B, so what can I do?   both the party not filed there annual return till now.  SIR, I am very stress right now. please help