Tds claim query

sir, we have booked the income in the fin. year 20-21 under service contract. and filed the gst returns in the month of may 2020. we not received any advance against this.

but our customer booked expenditure in the fin. year 19-20.

both are filed the income tax and gst annual returns.

Now they paying tds and rectifying f
tds returns 19-20 4th quarter.

is it possible to claim tds in the fin year 20-21. is there any queries are raised? by the department. please suggest me