Below error message is shown at Sessions->Session Recordings screen when clicking 'Groups' column header and its sorting does not work.
Message:
PAM-CMN-0008: error at session recording sort

CA Privileged Access Manager 3.x

Sorting by groups was disabled in the back end code because there are performance issues when sorting by groups for a large amount of session recordings.
It will be disabled in the UI to sort by groups in the future fix, 3.1.3, 3.2.2 and 3.3.