MQTT Trigger Requirements
For an MQTT trigger to be saved in an enabled state, the following must be true:
The MQTT connection alias that you want to use to create subscriptions and receive messages must exist.on the same
Integration ServerThe trigger service that you want to use to process messages received by the trigger must exist on the same
Integration Server.
The MQTT trigger must specify a topic.
If an MQTT trigger does not meet the preceding requirements, Designer will not enable the trigger upon save. Instead, Designer prompts you to save the MQTT trigger in a disabled state.