Do you need your tax identification number? In Hamburg, you can obtain it not only from the tax office, but also from the Hamburg Service on site.
If you can prove that you have a legitimate interest, you may be issued a second passport in certain cases.
You must have your vehicle checked at regular intervals to see whether it is still roadworthy.
Test entry - please ignore
If you need to prove your nationality, you can apply for a nationality certificate.
Would you like to have an official document certified? Here's how.