Declaring of Rental Income

Whatever is correct, do that. If it should come in PAN of A, ask tenant to revise the TDS return and update PAN of A and consequently offer income in A.

The tenant is a nationalised bank & it's not easy to get the PAN updated soon ....... Party "A" has given the request to the bank & it's under process.

Now inorder to file ITR of FY 19-20 , if we declare the income with "A" and file the return , will any issue occur? I have the deed to prove that the property is owned by "A"

As per my knowledge:

you can't claim tds. if you file income A?

updating tds details is only solution.

with Raj C Doshi's suggestion.

Hi
To claim TDS, amount must reflect in 26AS and if that does not happens then taxpayer cannot claim the same. However, there are case when deductor files wrong amount or wrong PAN against the payment which he later revise in TDS returns.

If you think deductor can revise the return with correct PAN then you can claim your TDS else it's better to file Income tax return without claiming TDS.