Username is not getting created correctly when login in through SAML

[LarsMagnusson]

See the attached image for log when user is created.

Instead of the username I get some ID as username. This ID changes each time you log in so a new user is created at each login. I dont understand what I have done wrong, the users first name, last name and email are sent correctly to portal.

The username is set to be sent as NameID.

[JalesM]

Yes, that is by design. See the following Portal for ArcGIS - SAML documentation:

https://enterprise.arcgis.com/en/portal/latest/administer/windows/configuring-a-saml-compliant-ident...

"Since ArcGIS Enterprise uses the value of NameID to uniquely identify a named user, it is recommended that you use a constant value that uniquely identifies the user. When a user from the IDP signs in, a new user with the username NameID will be created by the ArcGIS Enterprise organization in its user store. "