in 17-18 we calculate GST tax on invoice value not taxable value. Naturally we paid tax to GST excess. the excess amount we paid is RS 24005/-.to GST. now question is how We adjust the amount in Gstr 9
You should go for refund if you have paid the excess amount in cash. Show only the correct figures in gstr 9 which will be less then your monthly returns in your case.