What documents do you have to carry with you, if you want to drive a small-engined motorcycle?

You answered correctly. In Germany, when driving a small-engined motorcycle, you must always carry your driving licence to prove you are authorized to drive the vehicle. You also need the operating licence or the Certificate of Conformity (COC document) for the motorcycle, which confirms that the vehicle meets legal requirements. Finally, the insurance certificate must be carried to show that you have valid insurance for the motorcycle. Carrying all these documents is required by law, and failing to do so can result in fines or other penalties during a police check. Always make sure you have all three with you before riding.