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Vojtěch Osvald
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05/18/2015
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Hello,
we are using the .NET OPC UA Client and when communicating with OPC Server, many of these messages appear:
Sequence number=2911479 was not received in the available sequence numbers.
(the number changes)
We were wondering, what does this sort of message mean and if it means some error?
Thanks for any info, Vojtech
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Hello Vojtech,
you will find the .NET sources on github (https://github.com/OPCFoundation/UA-.NET). When you search for "was not received in the available sequence numbers" you will find the Trace output in "Session.cs".
It appears to be a Server error where the availableSequenceNumbers field in the Publish response contains a number that is not expected by the Client (maybe already acknowledged).
-Karl
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