Revoke Notification for CAL Solution

Hi,

I am using the SAP HANA for openSAP solution instance for practicing the workshop solutions from the openSAP course. I see that the status of the system shows 'revoked' in CAL.

Is there a document or post in this space which tracks the availability dates for the solutions in CAL? Some kind of notification to users to let them know a solution would be revoked....

Thank You,

Benedict