Adsense used to ask for W-8 Ben form when your adsense account is first approved.
Now for those receiving income in local currency (asian countries) after conversion through singapore bank, adsense is asking for Tax Residence Proof document, which also has an expiry date !
In India, it is usually PAN but it does not have any expiry.
Tax Residence Certificate can be obtained by applying physically to an AO (assessing officer) and it expires every year.
This process looks tedious and need to be repeated every year.
Did anyone else from Asia face this issue