Hello!
I'm trying to follow the instructions to Configure Inbound SSO with a Third-Party Identity Provider but got stuck on 1st step.
When I try to edit an existing user to add a Federation ID, I got the error: Error: Duplicate Username.
The username already exists in this or another Salesforce organization. Usernames must be unique across all Salesforce organizations. To resolve, use a different username (it doesn't need to match the user's email address).
And I'm like "ofc it exists, it's my user, this same user I'm in it" and ofc I even tried to change the username, which gets me a Error: Please do not change usernames in the Trailhead Playground.
And I tried wait, log out/log in again, all the dummie stuff...
Help, please!
11 answers
Hi!
So after all, Keiji was right in the first answer and Santosh walked me through the solution to change the username.
There's a validation rule that prevents username changes. To deactivate the rule, the steps are:
Setup > Object Manager > Users > Validation Rules > NoUsernameChangesAllowed > Edit > Click the box next to Active to deactivate it > Save
After deactivate the rule, go back to the user, change the username and save it.
Then I was able to insert the Federation ID.
Thank you for your help! =)
