<![CDATA[What happens if I update a user’s email address to an existing one?]]>Using both the UI or the API?

]]>https://fusionauth.io/community/forum/topic/2408/what-happens-if-i-update-a-user-s-email-address-to-an-existing-oneRSS for NodeTue, 12 May 2026 12:54:36 GMTThu, 08 Jun 2023 15:49:57 GMT60<![CDATA[Reply to What happens if I update a user’s email address to an existing one? on Thu, 08 Jun 2023 15:53:56 GMT]]>You'll receive an error in both scenarios.

If you are using the web interface, you'll get a red message saying "Already exists".

forum-edit-user-email.png

And if you are trying to use the Update User API endpoint, you'll receive a HTTP 400 Bad Request error:

forum-edit-user-email-api.png

]]>https://fusionauth.io/community/forum/post/6207https://fusionauth.io/community/forum/post/6207Thu, 08 Jun 2023 15:53:56 GMT