Configuring the Customer's SAP ERP System 
You can use this process to make the necessary settings in the customer's SAP ERP system for a vendor-managed inventory (VMI) scenario.
You create master data for VMI materials and vendors.
You create a purchasing info record for each material and each vendor.
You configure the field selection for the purchasing data screen.
You create an info structure, and define existing info structures as the data basis.
To enable the transfer of data to the vendor's SAP APO system, you proceed as follows:
You create a PROACT control profile for sending stock and sales data to the vendor.
You define the logical system name and the RFC destination of the target system.
You create the partner profile for the vendor and specify outbound parameters for EDI messages.
If you want to reduce stock in transit in SAP APO using a proof of delivery, you configure the receipt of shipping notifications. For more information about processing stock in transit in a standard VMI process, see VMI Stock in Transit in SAP APO. For information about stock in transit in a consigned VMI process, see Consignment Stock in Transit in SAP APO.