this is sovled
Solution:
use private NodeBuilderConfiguration configuration = new DefaultNodeBuilderConfiguration();
instead of
private NodeBuilderConfiguration configuration = new NodeBuilderConfiguration();

🙂

Dear reader,
I try to send a custom event with optional field (which works fine) but for some reason the ‘message’ field is empty. Please advice.

Setup
Opc.Ua.Stack-1.02.337.8.jar
Prosys-OPC-UA-Java-SDK-Client-Server-Evaluation-2.2.2-638.jar

Server side:
My java ‘CustomEventType’ is derived (via another custom event that is essentially the ‘BaseEventType’ with another name) from the ‘BaseEventType’ and the code is created using the xml code generator. The whole server setup is based on the ‘SampleConsoleServer’. Using a ‘NodeBuilderConfiguration’ in the ‘MyNodeManager’ my optional value is configured like this:
private NodeBuilderConfiguration configuration = new NodeBuilderConfiguration();
…
In the ‘createAddressSpace’ method I add the optional ErrorMessage attribute like this:
configuration.addOptional(getQualifiedName(“http://yourorganisation.org/myInformationModel/”, “ErrorMessage”));

Inspired by the ‘NodeManagerUaNode’.‘createEvent’-method my custom event is created using the following method (to include the configuration during the createNodeBuilder call)
public T createCustomEvent(Class clazz) {
//FIXME: default field ‘message’ does not arrive on client side

NodeBuilder nodeBuilder = createNodeBuilder(clazz, configuration)
.setName(myDevice.getDisplayName().getText() +”.”+ clazz.getName());
try {
return (T) nodeBuilder.build();
} catch (NodeBuilderException e) {
throw new UaInstantiationException(“Creating the node failed”, e);
}

}

Client setup
On client side all events created by the ‘NodeManagerUaNode’.‘createEvent’-method arrive fine as long as they have mandatory fields only. Employing my createCustomEvent method, the events ‘SourceName’; ‘Severity’ and (custom) ‘ErrorMessage’ fields are ok but the ‘Message’ field is null (but the Message is filled on the server side).

I’d be glad to send and receive custom events with optional fields and the message field – any suggestions are welcome.
Thank you
Ulrich