Bußgeldbescheid (fine notice)
With a Bußgeldbescheid, an office demands a fine from you, for example because you drove too fast.
What you can do
If you disagree, you can file an Einspruch. You only have two weeks from the Zustellung (formal delivery). Send the Einspruch to the office that sent you the Bescheid.
Keep the yellow envelope. It shows from when the two weeks run.
If you do not file an Einspruch in time, the Bescheid becomes final. Then you have to pay.