If you enter the 17 digit VIN (vehicle identification number) of your motorcycle along with the number of your delivery certificate, you can double check which services have been carried out and registered with your motorcycle and other important information (recalls). VBK No. Delivery Certificate No. VBK No. The VIN (Vehicle Identification Number), which begins with VBK, can be found directly on the right side of the steering head of your motorcycle. Delivery Certificate No. The Delivery Certificate Number is printed centric on the top of your Delivery Certificate.