After upgrading a detection server in your environment to 16.1 (or higher) you noticed that the Symantec DLP Detection Server Service (SymantecDLPDetectionServerService) is not running and that it's disabled. The same might raise alerts in 3rd party monitoring software configured to watch the status of the service/s in the DLP environment.
16.1 or higher
In DLP 16.1, or higher, the detection servers utilize two new services:
The service used prior to DLP 16.1 - Symantec DLP Detection Server Service - will be disabled during the upgrade.
No action is necessary in the DLP system. The Symantec DLP Detection Server Service is expected to be disabled and not running in DLP 16.1 or higher.
If the service status alert was raised by 3rd party monitoring tools it will need to be adjusted to watch the new services instead - Symantec DLP Detector Server Service and Symantec DLP Enforce Connector Service
For additional information on the DLP services refer to the official documentation: