Apa Nomor Pokok Wajib Pajak (NPWP) saya?

Tax Identification Numbers differ from country to country.

You can find all details and examples of documents where you can find your TIN here:

For EU residents
https://ec.europa.eu/taxation_customs/tin/tinByCountry.html

For both EU and non-EU residents
https://www.oecd.org/tax/automatic-exchange/crs-implementation-and-assistance/tax-identification-numbers/