Event-driven Process Chain Diagrams

This BPMN (Business Process Model and Notation) diagram sample shows the order processing workflow.
"In business or commerce, an order is a stated intention, either spoken or written, to engage in a commercial transaction for specific products or services. From a buyer's point of view it expresses the intention to buy and is called a purchase order. From a seller's point of view it expresses the intention to sell and is referred to as a sales order. When the purchase order of the buyer and the sales order of the seller agree, the orders become a contract between the buyer and seller.
Within an organization, the term order may be used to refer to a work order for manufacturing, a preventive maintenance order, or an order to make repairs to a facility.
In many businesses, orders are used to collect and report costs and revenues according to well-defined purposes. Then it is possible to show for what purposes costs have been incurred." [Order (business). Wikipedia]
The business process modeling diagram example "Order process - BPMN 2.0 diagram" was designed using the ConceptDraw PRO diagramming and vector drawing software extended with the Business Process Model and Notation solution from the Business Processes area of ConceptDraw Solution Park.