Recently, I found out that whenever I am sending any special character such as "ß" or a "Ö" e.g; ÄßÖÜöüß as address, paypal is not able to process it.
Then I tried URL Encoding them & sending it to paypal, but the issue is, in Paypal Manager the address values shows as encoded one, also in cases such as like these, where I send special character for every field, such as first name, last name, address, the page shows me some weird error.
I have no idea about how to send it to paypal other than urlencoding it, So please if any one have any insight into it, that would be of great help.