When a sales order is created, it is confirmed as a planned order through transaction MD02. The planned order can then be converted into either a purchase requisition if acquiring the material from a vendor, or a production order if producing the material in-house. Production orders are created by converting planned orders, which transfers the component requirements and reservations. Sales forecasts entered in transaction MC94 are transferred to demand management and appear as VSF in MD04, which are then consumed by sales orders to start the planned order process. Integration between sales/distribution and other modules like materials management, production planning, and financial accounting ensures availability and cost checks, tax determination, and transfer of requirements from sales to production.