# Registration requirements
From fishing to firing ranges to dentistry, certain businesses are required to be registered. This is the right place if you are interested in registering your professional activity or you are looking for information about doing so.To Services
Information about Rights & Duties
Under certain conditions, you can view the debtors' register online in the Joint Enforcement Portal of the Federal States.
Do you have cause for complaint after a train, bus or ship journey? Then you can contact the Federal Railway Authority (EBA).
If you wish to participate in aeronautical and aeronautical navigation radio, the BNetzA will assign you the callsign with the Aircraft Station Licence on application. In addition, you must notify changes, for example, the holder address or the radio technical equipment.
If you want to buy and sell firearms or ammunition on a commercial basis, you need a firearms dealer's license.