Align versions of customized probes and sensors If you have customized that probe or a sensor, you may need to realign the versions of the probe and sensor after an instance upgrade. Before you beginRole required: admin About this task The version of a probe or sensor is provided by the Discovery application to track changes. It is part of an instance installation or upgrade. A user can not change the version of a bundled probe or sensor. I f a new probe or sensor is provided with the Discovery application, and you have not customized that probe or sensor, then the previous probe and sensor gets replaced by the new one during an instance upgrade. To determine if a re-alignment is required: Look for a major version mismatch on the Discovery dashboard. A major version mismatch appears on the Discovery dashboard after the activation or reactivation of the Discovery plugin, or after the execution of a Discovery schedule. Check for version related error messages in the Discovery log. Major version related messages appear in the log after the execution of a Discovery schedule. Minor version related messages appear in the log if you have the Warn on Minor Version Mismatch system property enabled. Use the Advanced view on the Probe form or the Sensor form to check to the major version and minor version field values. To re-align the version of your probe and sensor: Procedure Log in as a user with the admin role. Revert the probe to the default version included with the instance. See Versions. Reapply your customizations to the probe or the sensor.