Once all of the configuration is enabled and saved, we can re-open the COSEM group we have created, and press the TEST button. If the configuration was successful, we should see the information returned in JSON format, as well as a green checkmark by the COSEM value:
If one or more COSEM values fails to read, you'll get an error within the JSON string, as well when hovering over the exclamation mark by the COSEM value in question: