tmnxBsxGrpMdaActivityChange 1.3.6.1.4.1.6527.3.1.2.63.1.4.1.6

The value of tmnxBsxGrpMdaActivityChange indicates the last time the value of tmnxBsxGrpMdaActivityState changed to or from 'active (1)' or 'standby (2)' state for an ISA-AA MDA in the group.