You can think about Application hazard as at least 2 controllers connect via CAN, that does not see the world in the same way.
The most usually reason for Application hazard, is due to a mismatch in application configuration in different units in the system.
Example DG id's are flipped on 2 controllers:
- Rewrite the plant configuration, activate, and broadcast.
- Make sure that when broadcasting application from one unit (communicated unit), all other units in the system receiving the application.