When putting CLM 4.6 under maintenance mode, you can enter a "message" which used to be displayed in the legacy Cloud UI.
In the new Cloud End User Portal (EUP), this message does not appear. The message end users receive when attempting to login to EUP is generic and display "System unavailable. Please contact your administrator". This message is misleading and can cause users to believe there is a problem with the environment, when in fact its just under maintenance.
This idea is to enable the EUP portal to display the Maintenance Mode "Message" when Platform Manager is under maintenance.