Usernames must be unique. A specific username can only be attached to one profile at a time, including deleted profiles. To give a deleted profile's username to a different member profile, locate the deleted profile and change its username.
Searching for duplicate usernames
- Go to Profile List.
- Select the Advanced Search By dropdown menu.
Select Attribute > Username > Is > the username you're searching for. Select each profile status checkbox, then select RUN THIS SEARCH.

- Select VIEW PROFILE on a profile in your list.
- Select Edit next to the member's Username field.
- Change the username to a different value, then select Save.
- Go back to the original member profile and update the member's username.