28db42e4_ge_Multiple_Sites___Rally_Help__Field
[Description] Send profile attributes of the user in the SAML response. Map the names of those attributes to the profile fields. Combine the first and last names to create a screen name. A screen name is required for user access. If your identity management system cannot pass a screen name attribute on user SSO login, enable this option to combine values from first and last name fields to create a user’s screen name. [Field] 
Profile Attribute Name Mappings
Manage Multiple Sites | Rally Help