A GST dealer received a notice regarding an ITC claim mismatch of ₹20 lakhs for the financial years 19-20, 20-21, and 21-22, comparing GSTR-3B claims against GSTR-2B/2A. For FY 19-20, a circular may offer relief, but for subsequent years, an appeal is suggested. Importantly, recipient ITC shouldn't be denied if payment was made, even if the supplier failed to file their GSTR-3B.