Process Tracking has been enabled but the "Log Size" properties of the Security event log are not configured properly. In order for Process Tracking to work reliably it is recommended that you reconfigure the security event log (with "Event Viewer") to "Overwrite events as needed".
This event is logged by EventSentry when Process Tracking is enabled but the Security Event log is NOT configured to "Overwrite Events as Needed". Some event log entries might be lost with the current event log configuration.
The Security Event log should have "Overwrite events as needed" option set for Log size.
You can configure Security Event log from "Administrative Tools -> Event Viewer -> Security (right click) -> Properties -> General -> Log size".
This event will also be logged for the "Logon Tracking" feature.