[CAUSE] A tmnxCpmMemSizeMismatch notification is generated when the RAM memory size of the standby CPM (i.e., tmnxChassisNotifyCpmCardSlotNum) is different than the active CPM (i.e., tmnxChassisNotifyHwIndex). [EFFECT] There is an increased risk of the memory overflow on the standby CPM during the CPM switchover. [RECOVERY] Use CPMs with the same memory size.