Before you start your own business, you need to register your planned activity.
Such prohibitions can be imposed by courts after serious offences.
If your German isn’t good enough yet, you should make sure to take a language course before you set up your business.
Some advanced courses have a special focus on the business world.
If you intend to set up your own business, you need to have the professional skills you require to implement your business idea.
For some professions, you need to provide evidence of your qualification.