...

A system with Edge devices publishing using the Sparkplug B protocol to Server A and Edge devices publishing MQTT messages to another Server B.

MQTT Engine will have two server connections configured:

• Server A Set 1
• Server B Set 2

In this instance the Access Control Lists (ACLs) on Server B may not allow for the subscriptions required by MQTT Engine for the Sparkplug B protocol. Setting the Filtered Namespaces for the MQTT Engine Server configuration for Server B to "Sparkplug B" will disable the namespace for this server connection.

...

A system with Edge devices publishing using the Sparkplug B protocol to Server A using Set1 and Edge devices publishing MQTT messages to a failover server pair Server B and Server C using Set2.

MQTT Engine will have three server connections configured:

• Server A Set 1
• Server B Set 2
• Server C Set 2

In this instance the Access Control Lists (ACLs) on Servers B and C may not allow for the subscriptions required by MQTT Engine for the Sparkplug B protocol. Configuring Set1 only for Associating the Sparkplug B namespace only with Set 1 will disable the namespace for all the two server connections associated with Set2Set 2.

MQTT Engine Namespaces Default - Filters

...