Defective return notice

Rahul Rustagi (Student CA Final ) (310 Points)

02 July 2020  
TDS was deducted on advance payment received on account of sake of property in the FY 2018-20. The TDS reflected in the form 26AS was not claimed and carried forward since we did not offer the capital gain income in FY 2018-19. Now, we have received defective return notice for not offering the income to tax against the TDS is deducted.

Please suggest.

Thanks