Ignition MQTT Engine not decoding Sparkplug B topic

I successfully developed a project on a testing environment; upon migration to production, the system no longer functions as it did on the testing environment.

I have included two MQTT brokers on different ports, with the Sparkplug B namespace enabled on the correct broker, and ignored on the other. Despite this, the Ignition MQTT Engine is not decoding the message and is is unusable.

Any guidance would be appreciated.