Enforcement Sensor Status
NOTE: If Graph API Enforcement is enabled in your organization, Enforcement Sensor Status is redundant and not visible on the Sensor page.
When enforcement has been enabled for a sensor, the enforcement status is listed on the Manage > Sensors page for that sensor:
The combination of these 2 states are reflected in the tab for the sensor.
Cloud Email Protection may report the status "Errors with enforcement actions:"
The "Errors with Enforcement actions" state is defined as:
Fewer than 80 out of the last 100 messages could be enforced
This state may be shown in the very beginning stages as you are testing enforcement.