TDSCPC.GOV.IN has also provided a facility to check the Challan Status Query vide which it can be checked that has there any challan not claimed by deductor in the particular Financial Year or not. This function is helpful to resolve the default notice issued by Income Tax Department.
In case any deductor receive demand notice from income tax department, first of all he may check this function for unclaimed challan. If unclaimed challan is available it means that either complete challans have not been entered in etds return or wrong data of challans have been entered in TDS return.
There are three types of inquiries available which can be seen in below picture :-
Period can be entered in specified format i.e. 01-Apr-2013 etc. or dates can be entered only with in financial year.