The tmnxDiamPpPrxMcLocStateChanged notification is sent when the value of the object tmnxWlanGwGrpOperState changes. [CAUSE] The MCS (Multi Chassis redundancy Synchronization) state of a proxy function has changed. [EFFECT] The effect depends on the actual state transition. The states 'active' and 'standby' are normal states. In other states, Diameter communication may be interrupted, and hosts may be refused access to network services. [RECOVERY] The need for recovery action depends on the state transition. In the states 'active' and 'standby', no recovery action may be necessary.