You can configure your message flow to emit event messages that can be used to support transaction monitoring and auditing, and business process monitoring.
Monitoring messages are published to MQTT brokers as nonpersistent by default. However, subscribers to MQTT brokers specify the maximum quality of service (QoS) that they require, which determines whether the message is delivered only once or more than once, and whether a confirmation of receipt is required. For more information, see http://mosquitto.org/man/mqtt-7.html.
To receive monitoring events, complete the following tasks.