TDS return

I filed q4 tds return by filling deductee Transaction and mapping challan to transaction. now such tds is procesed with defaults as demanding to pay the exact challan amount which is mapped in original return.

I try to rise a request for justification report to check the reason for that. but I'm not unable to rise it. To the best of my knowledge, I added challan to transaction but now dept is asking same amount. the original return was may be filed without challan linking.

so kindly suggest me the solution.