Our accountant missed to claim accrued ITC of Nov 20 which had duly appeared in GST 2B , now while comparing 20 21 ITC with purchase .register same is detected, we want to claim this missed ITC of Nov 20 in GST3b of March 21 which we have not filed yet, but this makes the box red showing warning that this is in variance to rule 36(4). Please suggest solution