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Process documentationPurchase-to-Order (PTO) Procurement Locate this document in the navigation structure


You can order a product from one or several vendors for one particular customer. In contrast to mass orders for the general market, the product in the purchase-to-order is especially designed for the customer so that it cannot be sold to other customers.

Example Example

A customer places an order X1 with a company A. The company A does not manufacture these goods internally. So, they will procure these goods from company B and then supply it to their customer.

End of the example.

A purchase requisition assigned to the sales order item is created for each order item. The purchase requisition cannot therefore satisfy other requirements. These processes are processed at item level. Hence, a purchase order item is assigned to a sales order item. For more information about purchase-to-order in the standard SAP ERP system, see Individual Purchase Orders.


Sales Order

When creating an order, you process purchase-to-orders based on the selection (or assignment) of corresponding item category and schedule line category. You use TAB as the default item category. You can create or change purchase requisitions and their assignments through the sales order. When you make changes in the sales order, the system automatically updates the purchase requisitions only if the purchase requisitions are not converted to purchase orders.

Allocation Run

In Purchase-To-Order processing, it is not mandatory to carry out an allocation run. You can also define if the PTO sales orders are considered in order allocation run. To allocate PTO sales order, you select the Order Allocation Required checkbox in Customizing for Maintain Order Allocation Run for Special Sales Documents under   Logistics – General   SAP Fashion Management   Order Allocation Run   Cross-Applications   Shipping  . You can create a delivery only if you have already executed the allocation.