The following error occurs when committing changes to a configuration:
Error:Duplicate user name 'intranet\USER01' Error:Failed to parse security policy (Module:device) commit failed
Cause
This error is actually not due to a duplicate user name. Instead, the problem is caused by the name "USER01" in all capitalized (upper case) letters. There are issues when capital letters are used as part of the domain or names in the user fields. When a capitalized name is parsed, the system may consider it a "Duplicate object" when it is not.
Resolution
Make sure that all usernames or domains are in lower case for the User field and the commit error should no longer appear.
For example:
The value 'intranet\USER01' will return an error.
The value 'intranet\user01' will work as expected and commit without issues.