Event Code 1803 Policy has no associated severity
One possible reason for receiving this code is that the Detection Server had not completed receiving the Policy from the Monitor Controller when it processed an incident(s). It had received the Policy Rules, but not the commands (like what severity to apply). The
Detection Server generates an event indicating the Policy had no severity, and then assigns the default of High to the incident(s).
Eventually the Detection Server will finish receiving the Policy commands and the issue will resolve itself.
Recycling the MonitorController process will also resolve the issue quicker.