Key information
A username cannot be changed after the account is created. This applies to everyone: the user, their administrator, and the Tarmac support team.
How to proceed
If a username is wrong:
Create a new account with the correct username in the Backoffice. See How to create an AGOA user in the Backoffice.
Deactivate the old account if it is no longer needed. See How to activate or deactivate a user.
If you cannot create the new account yourself, contact Tarmac support at [email protected].