When executing the Symantec Endpoint Protection Manager (SEPM) REST API command /sepm/api/v1/groups, the numberOfPhysicalComputers may be incorrect. Also, executing the REST API command /sepm/api/v1/groups/<guid> against a specific group will also return an incorrect count for numberOfPhysicalComputers and numberOfRegisteredUsers, typically zero.
This issue is fixed in Symantec Endpoint Protection 14.2 RU2 MP1. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec software here.