Gst cancelation

GouTam SachDeva (70 Points)

09 May 2018  

i have to cancel gst regaitration, i have excess claim of itc (igst) 900 rs due to seller missed invoices, i have no itc claim for this month and while filling 900 in itc reversal tab, values go to negative and it generated error, 

so how i can reverse itc??