The 7-digit serial number (S/N) can be found in various places:
on the white sticker on the frame of your bike
in the E-Bike Passport at the end of the Riese & Müller operating instructions provided
sometimes on the invoice for your vehicle
If you cannot find it in these places, your Riese & Müller dealer can provide you with the serial number. They will find the serial number on the dealer invoice or on the Bosch diagnostic report for your bike.