I am running Ignition version 8.1.14. I am using CirrusClient and MQTT Engine to ingest both unformatted and Sparkplug B data. I can ingest the Sparkplug B data and it is incorrectly formatted, as expected. However, when I enable the Sparkplug B namespace, the broker fails to subscribe to the topic.
If nobody has an answer to this, you could reach out to support@cirrus-link.com to see if they can help.
I'd check permissions on the spBv1.0/# wildcard topic to make sure you have permission to subscribe to it as a wildcard. Also make sure you're on the latest update of the MQTT Engine just in case there's any bug fixes.
I left the problem untouched for an hour or so and when I came back it was working, I have no answer but no problem either. Thanks all