If you setup an identity provider (IDP) and a service provider (SP), change the communication protocol to use the browser Artifact profile, and then try to federate users between the IDP and SP, the federation fails.
Workaround: None.
In realm mode, if you federate user accounts on an identity provider (IDP) and service provider (SP), terminate Federation, and then logout, the following error message is displayed: Error: No sub organization found.
Workaround: None.