Definition of Event Container 

Use

The event container contains the event parameters as container elements. If you define triggering events or terminating events for a task, you can specify the binding from the event container to the task container. If you define triggering events for a workflow, you can specify the binding from the event container to the workflow container.

You define a binding from the workflow container to the event container in the definition of an event creator.

You define a binding from the event container to the workflow container in the definition of a wait step.

The event container contains workflow system elements as standard. You can add more container elements to the event container within object type definition in the Business Object Builder. This is not usually necessary, however.