KTM 690 ENDURO EU - Manual (Page 19)

LOCATION OF SERIAL NUMBERS
17
4.3
Key number
100179-10
The key number  can be found on the KEYCODECARD.
Info
You need the key number to order a spare key. Keep the KEYCODECARD in a safe
place.
4.4
Engine number
100211-10
The engine number  is stamped on the left side of the engine under the engine sprocket.