GSTR 9 -ITC query

my tax liability in gst in the month of dec 18 is 234661, in 3 b shown rs 59883, but in the same month ITC is 240000 , but taken 0 in 3b, then what I need to do in annual return, do i have need to pay any liability or it will be adjusted against ITC,if I correct in gstr 9 then my tax payable is ( 234661-59883) =174778 in column no 9 ,as in gstr 9 ITC Column is not editable so where I should adjust rs 240000?