Transitions and Conditions
Transitions go from each activity in the process to the next activity. Each activity must have at least one incoming and at least one outgoing transition. Each activity can potentially be called from several other activities or can conditionally call several activities.
For example, if a credit check were included in a business process, the result of the credit check outcome could determine the next activity. A negative credit check could result in an email to the customer. A positive credit check could result in a different email and placement of the order.