Usernames modification in OCI/EPM Enterprise Cloud

Summary:

I'd like to modify username in OCI

Content (please ensure you mask any confidential information):

Happy new year to everyone. All the best for this new year!

I work with EPM Cloud and my users are managed in OCI. We created our users at the beginning of the project using the email address as a username

The email adresses are moving from alain@oldmail.com to alain@newmail.com

The OCI UI to manage user doesn’t allow to modify the username and I couldn’t find a way to do it in batch.

Have you ever come to this situation ?