BOSCH CHAIN RING 15 TEETH

HOW TO REPLACE THE BOSCH CHAINRING / SPROCKET ON THE BOSCH ACTIVE / PERFORMANCE MOTOR?
To change the chainring you need the following tools:

Crank puller and Bosch spider / lockring tool
To replace the Bosch chainring, you may also need the Bosch lockring incl. sealing ring
SPECIFICATIONS
Bosch System: Bosch Active Line Gen2 (BDU2XX), Bosch Performance Line CX Gen2 (BDU2XX), Bosch Performance Line Gen2 (BDU2XX), Bosch Performance Line Speed Gen2 (BDU2XX)
Drive system: Bosch drive
Manufacturer: Bosch
Item: Bosch E-Bike chainring 15 teeth for drive unit
Scope of delivery: 1x 15 teeth chain wheel
Item number: 1270016204
Compatibility: Bosch Active / Performance / Performance CX since 2014