Some Users are duplicated when searching for them in some of the SMP Console pickers. The following query can be run to see what Users appear more than once:
select Name, count (Guid)
from vRM_User_Item
group by Name
having count (guid) > 1
order by 2 desc
Checked to see if some of those Users that appeared more than once are seen in the following:
1. Under Manage>Org. Groups and Views>Default>All Resources>Users
2. Search for a duplicate User
3. Open Resource Manager for both references and under View>Inventory and review the dataclasses that were created for Users
Confirmed that one User came after an AD Import and the other from Basic Inventory when reporting primary user.
ITMS 8.x
This can normal and expected in some cases. These User items can be created from different processes and merged if these have similar entries. Usually the "Duplicate User Merge" (under Manage > Jobs and Tasks > System Jobs and Tasks > Service and Asset Management > CMDB) takes care of this if it is scheduled and the resource key used matches.
In order to avoid having these Users duplicates, try the following:
This merge rule may need to run a couple of times to get all of these merged.