We just upgraded about CAMM to 20.2.10
After the upgrade we select the engines and run a typical upgrade which is failing with an error in screenshot.
We select the engine, then the Upgrade button and choose Typical. Then this error appears.
All supported releases of Mediation Manager
The Performance Center user details are not configured in Mediation Manager.
In the Mediation Manager web UI select the CA Performance Management option in the top right corner.
In the Environment Selection UI that appears enter the correct Console Host, Port, and the Username/Password for a valid User assigned the Administrator Role. After the changes are saved the error will no longer appear.