Editing BPMN (section)

======Ad-hoc Sub-Process======

An Ad-Hoc Sub-Process or Process contains a number of embedded inner Activities and is intended to be executed with a more flexible. The Ad-Hoc Sub-Process contains only Activities, Sequence Flows, Gateways, and Intermediate Events. An Ad-Hoc Sub-Process may also contain Data Objects and Data Associations. The Activities within the Ad-Hoc Sub-Process are not required to have incoming and outgoing Sequence Flows. However, it is possible to specify Sequence Flows between some of the contained Activities. The contained Activities are executed sequentially or in parallel, they can be executed multiple times in an order that is only constrained through the specified Sequence Flows, Gateways, and data connections. After completion of an inner activity an completion condition is evaluated, so the sub-process might be completed by meeting the condition without having started some of the activities.