Xenta Servers are producing lots of Messages that contain the text "$COS#...#MA1
All Messages start with $COS# followed by an object ID and they end with #MA1
The messages are coming, although there are no trend log values missing.
Tac Vista 5.1.6 or older
This is a bug which is fixed in Vista 5.1.7. This message - $cos - is created every time Vista tries to retrieve an alarm from a Xenta controller and fails. Vista then tries again a couple of times. If successful, this message is removed. The problem is that the acknowledgement that should remove this log entry never arrives.
Upgrade to Vista 5.1.7