Manufacturer Part Number in Purchase Order Collaboration 
A supplier who supplies a particular product to a customer may be able to procure the same product from various manufacturers. The products that these different manufacturers provide (known as the “manufacturer parts”) may be of varying quality or the customer may prefer one manufacturer over another. For these reasons, a customer can decide on the source of a product by requesting a particular manufacturer part number (MPN) and manufacturer in the purchase order. SAP Supply Network Collaboration (SAP SNC) supports MPN data in purchase orders and advanced shipping notifications (ASNs).
Note
MPNs are not relevant to the following SAP SNC applications:
Responsive replenishment
Replenishment order collaboration
Service Parts Planning
MPNs are not supported with SAP for Discrete Industries and Mill Products (DIMP).
Features
MPN in Purchase Order Collaboration
A customer can include an MPN and manufacturer in a purchase order that he or she sends from his or her back-end system to SAP SNC. When creating a purchase order confirmation, a supplier can change and confirm the MPN and manufacturer.
MPN data is transferred to SAP SNC at purchase order item level (in an XML message of type ReplenishmentOrderNotification or PurchaseOrderERPReplenishmentOrderCollaborationNotification). When the purchase order is created in SAP SNC, the system copies the MPN data to the request schedule line because the supplier processes confirmations at schedule line level.
Note
MPN data cannot be transferred from an SAP ERP back-end system of enhancement package 3 for SAP ERP 6.0 or lower using the PORDCR1 Idoc. Therefore, MPN data cannot be used in purchase order collaboration with an approval process. As of enhancement package 4 for SAP ERP 6.0, you can transfer MPN data using the PurchaseOrderERPReplenishmentOrderNotification XML message.
MPN in Delivery Collaboration
A supplier can view an MPN and manufacturer in the due list for purchasing documents. A supplier can specify a new MPN and manufacturer when creating an advanced shipping notification for a purchase order.
Approved Manufacturer Parts List (AMPL)
In SAP SNC, the customer must create a list of manufacturer part numbers that he or she considers acceptable for a particular product (approved manufacturer parts list). The customer can create the list as follows:
Manually in SAP SNC
By transferring the approved manufacturer parts list (AMPL) from his or her SAP ERP back-end system to SAP SNC using the Core Interface.
For more information, see Integration of Approved Manufacturer Parts List with CIF.
Example
A customer orders screws with product number SCREW-001 from a supplier. This supplier procures the screws SCREW-001 from two different manufacturers (manufacturer A and manufacturer B). The screws from manufacturer A have the manufacturer part number MPNSCREW-001-A01, while the screws from manufacturer B have the manufacturer part number MPNSCREW-001-B01. The customer however, only wants the screws to come from manufacturer B. Therefore, when completing a purchase order for the screws SCREW-001, the customer also specifies the manufacturer part number MPNSCREW-001-B01 to request that the preferred screws are procured. The following figure depicts this example:
