Mandatory declaration of TaxIDNumber for NRI

ashok oza (274 Points)

25 June 2019  
I've been filing my US based, NRI son's ITR. He works in US and has non-repatriable investments in India, on which 33% TDS is routinely deducted From A.Y. 2019-20, it is mandatory to furnish Tax ID no. (Which, I've been told on this forum, is same as US Social Security Number)
My son has deep reservations about divulging this info., since, he says, even US Govt. (IRS) doesn't share this number, on demand. What should I do?And,How secure is it to give this info. in ITR Form ?