An Active/Custom Scan command is executed from Symantec Endpoint Protection Manager (SEPM) to a Linux client but it is getting rejected.
Right click on a Linux Client in a group > Run a command computers > Scan > Active Scan or Custom Scan
14.3 RU3 +
Active/Custom scan command is not supported on Linux platform.
Full Scan > Supported
Active / Custom > Not Supported
For more details on the feature differences across operating systems, please refer to the Symantec Endpoint Protection documentation:
Symantec Endpoint Protection Features Based on Platform
Please note that Linux only supports Full Scans and Custom Scans of individual files and folders.