
r3ujg (r3ujg) asked a question.
- Okta is our source of truth (recently migrated).
- Our users are NOT sourced from AD.
Scenario: Someone gets married and wants to change their legal name, meaning their username, display name, and primary email address. The old name needs to remain as an alias in exchange online.
I am guessing that since the primary key between the okta and m365 integration is the primary email, changing it will NOT update the primary email in M365, rather create a new user? Can someone confirm this?
Looking for way to perform a name change in okta without orphaning something in M365. Hope that makes sense.

Here is what support said:
You can match users on any attribute you like, depending on your settings of "Application username format" under the Sign On tab. Once the Okta user is created/matched in Office, the Okta user gets an application user ID. After that, if you have "Update application username on" under Sign On set to Create and Update, changing the username in Okta will push an update in Office as well. The same goes for any other attribute. Having "Create and Update" under mappings for an attribute will update it, if it's changed in Okta.