!!! Overview

!! [OpenID Connect]
[{$pagename}] is a typical [OAuth Error] value defined in the [OAuth Parameters Registry]

[{$pagename}] may be seen when The [Resource Owner] is REQUIRED to select a session at the [Authorization Server]. The End-User MAY be [authenticated] at the [Authorization Server] with different associated accounts, but the [Resource Owner] did not select a session. 

[{$pagename}] MAY also be returned when the [Prompt Parameter] value in the [Authentication Request] is __none__, but the [Authentication Request] cannot be completed without displaying a user interface to prompt for a session to use.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]