with the release of 4.16  prometheus adapter[0] is deprecated and there is a new alert[1] ClusterMonitoringOperatorDeprecatedConfig, there needs to be a better details on how these alerts can be handled which will reduce the support cases.

[0] https://docs.openshift.com/container-platform/4.16/release_notes/ocp-4-16-release-notes.html#ocp-4-16-prometheus-adapter-removed
[1] https://docs.openshift.com/container-platform/4.16/release_notes/ocp-4-16-release-notes.html#ocp-4-16-monitoring-changes-to-alerting-rules

4.16

NA  

NA

As per the current configuration the clarification for the alert is not provided with much information

  more information should be provided on how to fix the alert.

As per the discussion, there will be a runbook added which will help in better understanding of the alert