Hi,

The Good_CompletesAsynchronously Status Code means that the value was successfully written to an intermediate system but the server does not know if the data source was updated properly.

In practice, this is not a widely used feature. You probably need to develop your own customized test server if you want to test this feature.

As a further reference, the specification part 4 defines the write service as “The values are written to the data source, such as a device, and the Service does not return until it writes the values or determines that the value cannot be written. In certain cases, the Server will successfully write to an intermediate system or Server, and will not know if the data source was updated properly. In these cases, the Server should report a success code that indicates that the write was not verified. In the cases where the Server is able to verify that it has successfully written to the data source, it reports an unconditional success.”