Fields in which correction to be made Authority to correct Time limit for correction through bank 1 PAN/TAN Concerned assessing officer in case of online challans. Collecting bank* / assessing officer in case of physical challan Within 7 days from challan deposit date 2 Assessment Year Within 7 days from challan deposit date 3 Major Head code Within 3 months from challan deposit date 4 Minor Head code Within 3 months from challan deposit date 5 Nature of payment Within 3 months from challan deposit date 6 Total Amount Within 7 days from challan deposit date 7 Name Concerned assessing officer in case of both online and physical challans NA