By mistake some sale bills of B 2 B sales were missed in 2017 -18..and were added in B2CS sales..
Now in the return of March we want to add these bills .Taxable total is 8 lacs...but the figure of B 2 CS is only Rs 4 lacs..how to incorporate these bills....
You have to go B2C amendment table in GSTR 1
then choose FY and after that you should less your figure.