SYMPTOM:
"An object with name 'XXX' and type 'User' or 'User Group' already exists in the destination folder" is thrown when creating a user group with Strategy Developer 9.4.x-10.x. The same name is not being used for another user group within the same folder.

Sample Code/Error
Sample Code/Error
An object with name 'XXX' and type 'User' Or 'User Group' already exists in the destination folder.
CAUSE:
There is a user group with the same name somewhere within the project source. There can only be one user group with that name within each project source, not just the sub group.
ACTION:
Edit a user group and select "Groups." Check "Flat Display" at the bottom. This will show the full list of user groups for the entire project so users can see the already existing user group.

Alternatively, run a search for configuration objects to list all the existing user groups and identify the duplicate one.