• If there are less than three such combinations in the challan, user must enter all (either two or one).
If the return is filed through TDS software, then all required detail for 27d form request will be fetched automatically on the Traces site. IF the return filed data is not in the TDS software, then fill all the required details on the below page,

Note :- This is correct as per the checks applied by us, however, not completely sure about this and needs to be further checked.