Input tax credit mismatch between GSTR-3B and GSTR-2A requires year-wise scrutiny and rule-based action. ITC claimed and utilised in GSTR-3B that exceeds the ITC reflected in GSTR-2A requires zone-wise listing, segregation, and year-wise scrutiny by the Proper Officer. The identified cases are to be examined on GSTN data, and necessary action is to be taken according to the applicable rules, with regular monitoring at division, zone, and headquarters levels.