When you are setting up your social Identity Provider (IdP) in Okta, there are a number of settings that allow you to finely control the social login behavior. While the provider-specific instructions show one possible configuration, this section explains each of these in more detail so that you can choose the right configuration for your use case.
IdP username: This is the expression (written in the Okta Expression Language) that will be used to convert an IdP attribute to the Application User's
username. This IdP username will be used for matching an Application User to an Okta User.
For example, the value
idpuser.email means that it takes the
You can enter an expression to reformat the value, if desired. For example, if the social username is
email@example.com, you could specify the replacement of
endpointA.mycompany to make the transformed username
john.doe@endpointA.mycompany.com. See here for more information about the Okta Expression Language.
Match against: The Okta user property against which the IdP username is compared.
More user profile attributes are available for matching as an Early Access feature.
Account Link Policy: Determines whether your Application User should be linked to an Okta user.
Auto-Link Restrictions: Allows you to restrict auto-linking to members of specified groups.
Provisioning Policy: Determines whether just-in-time provisioning of users should be automatic or disabled.
Profile Master: If selected, the Social Identity Provider will be the source of truth for a user's profile attributes. This means that next time the user signs in using the Social Identity Provider, Okta will update the user profile attributes for this user. If a user is assigned multiple applications with profile mastering enabled, a prioritization in Directory -> Profile Masters will decide whether this provider will be mastering the user's attributes. For more information about this, see Attribute Level Master
Group Assignments: Allows you to assign new users to one or more existing Groups. For example, new Facebook users could be added to a "Facebook" Group.