sys.dm_broker_queue_monitors - what means status DROPPED?

Hello! I'm trying to understand service broker errors that i have in log:

An error occurred in dialog transmission: Error: 9655, State: 3.

Error: 9736, Severity: 16, State: 0.

Can't find any information in the BOL and internet at ALL

Now, i'm trying to understand sys.dm_broker_queue_monitors that have many rows with DROPPED status, but there are no description of this status in the BOL. Can someone help me to find relative information?

Thanks!

P.S. Service Broker is the worst thing due a badest documentation!

Konstantin Knyazev