The number of collected MQTT messages is displayed here for each alias and topic. See “MQTT (Input agent)”.

You can use the context menu to empty a queue if it contains at least one message and you have the user permission "Administrator".
A lightweight publish-subscribe protocol for IoT and machine-to-machine communication. MQTT transmits messages via topics and is optimized for environments with low bandwidth or unstable connections.
The input agent receives data in Phase 1 and starts a job for further processing. It works either as event based (passively waits for data) or scheduled (actively fetches data).