This article answers the question if you need the CANopen Conformance test for your devices.
All products with a CANopen Interfaces
Do I need the CANopen Conformance test for my devices?
The CANopen conformance test is an optional test. However, it ensures that your device is compliant to the CANopen standard and will not cause trouble in a CANopen network. It is therefore recommended that manufacturers submit their devices to CAN in Automation for conformance testing.