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BadWriteNotSupported error while writing a struct value

18 Aug 2021 07:04 #10122 by goosvanbeek
No problem at all!

Best regards.

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18 Aug 2021 06:36 #10120 by support
I am glad you found the cause. Sorry that I could not react earlier.

Best regards

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18 Aug 2021 06:23 #10119 by goosvanbeek
Already found it out
I used
client.WriteValue(endpointDescriptor, nodeDescriptor, attributeData);
instead of
client.WriteValue(endpointDescriptor, nodeDescriptor, uaGenericObject);
Now it's working as expected.

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17 Aug 2021 19:01 #10118 by goosvanbeek
Hi Support,

VS 2019/QuickOPC 5.61.241
I'm using the code below to write a struct value
static void Main(string[] args){
            UAEndpointDescriptor endpointDescriptor = "opc.tcp://localhost:48030/";
            UANodeDescriptor     nodeDescriptor     = "ns=2;i=6009";
            using(var client = new EasyUAClient()){
                    var attributeData = client.Read(endpointDescriptor, nodeDescriptor);
                    if(attributeData?.Value is UAGenericObject uaGenericObject){
                        var fieldData = (((StructuredData)uaGenericObject.GenericData)?.FieldData);
                        if(fieldData == null){
                        var batchCode      = ((PrimitiveData)fieldData["BatchCode"]).Value;
                        var bundleCode     = ((PrimitiveData)fieldData["BundleCode"]).Value;
                        var boardCount     = ((PrimitiveData)fieldData["BoardCount"]).Value;
                        var boardLength    = ((PrimitiveData)fieldData["BoardLength"]).Value;
                        var boardWidth     = ((PrimitiveData)fieldData["BoardWidth"]).Value;
                        var boardThickness = ((PrimitiveData)fieldData["BoardThickness"]).Value;
                        //((PrimitiveData)fieldData["BoardCount"]).Value = 123;
                        //client.Write(endpointDescriptor, nodeDescriptor, attributeData);
                        client.WriteValue(endpointDescriptor, nodeDescriptor, attributeData);
                catch(UAException uaException){
                    Console.WriteLine("*** Failure: {0}", uaException.GetBaseException().Message);
This causes the exception below
An OPC-UA operation failure with error ID 'Opc.UA.ServiceResult=0x80730000' occurred, originating from 'OpcLabs.EasyOpcUA' and with depth of 1. The inner OPC-UA service exception with service result 'BadWriteNotSupported' contains details about the problem.
OPC UA service result - {BadWriteNotSupported}. The server does not support writing the combination of value, status and timestamps provided.
+ A list of parts provided (or not provided) to the Write operation follows. Value: yes, index range: no, source timestamp: yes, server timestamp: yes.
+ When writing, be aware that writing the server timestamp (in this call, 17/08/2021 18:38:28) is not supported by some servers, including the OPC Foundation sample server.
+ The node descriptor used was: NodeId="ns=2;i=6009".
+ The client method called (or event/callback invoked) was 'WriteMultiple'.
I am able to update the values with UaExpert.
I'm using a test server which I attached.

Can you help me any further?

Best regards,
Goos van Beek.

File Attachment:

File Name: TestServer.rar
File Size:1,092 KB

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