When a user is created in Assignar, a username must be created. This is how the user is identified in the system and also used for login purposes.
It is important to note that once a username has been created, it is locked and cannot be edited.
If an error is made when creating a username, the user profile will need to be re-created to update the username.
This can be done by:
Archiving the user you need to re-create
Click +New User and re-enter all user details again with correct username