When migrating from SAML to AuthHub SAML and using the Identity Provider One Login you may find that following the migration that when users attempt to sign in the platform returns "Your user has not been assigned a role. Please contact your CloudHealth administrator." whereas this hasn't occurred in the past.
This is due to differences in how the old Service Provider for SSO and the new Service Provider for SSO handle attributes as they're passed in the SAML assertion. But can be resolved by updating the existing "roles" claim rule within your One Login SAML application.
To resolve the issue sign into the One Login Administration Portal, and follow these steps: