Are you refering to the Hardware ID. If yes then follow this
Duplicate Hardware IDs result in only one client showing up in the Symantec Endpoint Protection Manager for two systems.
http://www.symantec.com/docs/TECH97626
If clients are exhibiting this behavior please follow these steps on affected systems:
- Stop SMC on both of the affected client computers by clicking Start > Run, type smc -stop then click OK.
- On the SEPM console, delete the client entry that the two computers have been sharing. This will prevent the client duplication that would otherwise occur due to the following steps.
- On each of the affected computers, go to registry location:
HKLM\Software\Symantec\Symantec Endpoint Protection\SMC\Sylink\Sylink
- Clear the value for "HardwareID." (make it blank)
- On each of the affected computers, navigate to the following directory location:
C:\Program Files\Common Files\Symantec Shared\HWID
- Find file "sephwid.xml". Rename it to "sephwid.xml.bak".
- Start SMC on each computer by clicking Start > Run, type smc -start then click OK.
When the clients check in they should have unique hardware IDs.