Detect queue overflow

[kristian.mo]

Hello, in the C# SDK am I able to detect and/or get a callback somewhere when a monitored item queue overflows for timeseries? I see there should be an overflow event for event subscription.

[Support Team]

Hi,

the item queue must be configured in "length" and "discard policy" (what to do on overflow). In the application you must check the overflow bit as part of statuscode to detect if the value you are looking at, was a queue overflow or not. There is not extra event, it is just an info bit inside the status of the data value.

See OPC UA Secification for details.
https://reference.opcfoundation.org/Core/Part4/v105/docs/5.12.1.5