Notification settings invalid for a simulation
You're trying to run a simulation with an invalid notification setting.
| Error Message | Simulations with an invalid notification setting cannot be run. | 
| Error Code | notification_simulation_run_notification_settings_conflict | 
| Status Code | 409 | 
Common causes
You're trying to run a simulation with an invalid notification setting. A notification setting may have been updated recently so that it no longer accepts simulated traffic.
Solutions
Update a notification setting so that it's valid, then try your run again.