OptionalbusinessOptionalcorrelationThe correlation key of the message.
OptionalmessageThe unique ID of the message. This is used to ensure only one message with the given ID
will be published during the lifetime of the message (if timeToLive is set).
The name of the message.
OptionaltenantThe tenant of the message sender.
OptionaltimeTimespan (in ms) to buffer the message on the broker.
OptionalvariablesThe message variables as JSON document.
An optional business id used to enforce uniqueness of the process instance that a message start event would create. If provided and uniqueness enforcement is enabled, the engine rejects starting a new process instance when another root process instance with the same business id is already active for the same process definition. It has no effect when the message correlates to a catch, boundary, or intermediate event.