invoice issue

aman goyal (125 Points)

26 October 2017  
hello sir
i purchase some goods in aug @ 18% Gst & fill my gstr3b of aug with this bill.
but now supplier modify this bill with 5 %gst and show his aug gstr1. now he call me to modify this bill.
so pls advise me what can i do because i fill my aug gstr3b already.
aman goel