This scenario is based on the existing EDI interfaces in the SD and MM modules. The messages for purchase orders, order acknowledgments, shipping notifications and invoices are also used for internal data communication between distributed purchasing and sales systems.
The sales system and the purchasing system have a customer - vendor relationship:
The customer called "purchasing" places an order with the vendor called "sales and shipping", who will receive this order as if it were sent using EDI, but without an EDI sub-system (incoming orders in SD). After the order has been checked a confirmation is sent to the purchasing system.
The "Cross-System Purchasing/Sales" Scenario
1. & 2. Changes to Purchase Order in the Purchasing System
If the transmission medium for the message control is set to ‘6’ (EDI) in the purchase order, and the ALE/EDI output is also set up appropriately, a purchase order will be sent via ALE to the sales system. A vendor called "sales and shipping" must exist in the purchasing system.
The user can set up the ALE layer in Customizing in such a way that segments that are not used are filtered out when the IDoc is constructed. For an internal purchase order, these could include taxes, conditions, terms of delivery, terms of payment, export data, totals.
1a. 2a. Changes to Purchase Order in the Purchasing System
Changes to purchase orders are sent to the sales system.
3. Incoming Order in "Sales and Shipping"
The incoming orders arrive via the EDI input in the SD system.
4. & 5. Order Acknowledgment - Dispatch from "Sales and Shipping"
The order confirmation is sent via the message control, transmission medium "6" (EDI). The changes that are marked as such are changes to either the quantity or the deadline.
6. Order Acknowledgment - Arrival in Purchasing System
The order confirmation is sent via the standard EDI communication to the decentral MM. The only acknowledgments that are automatically imported are those that do not contain corrections (full confirmations). Changes have to be processed manually.
The effect of the acknowledgment is that the number that was assigned to the sales order in the sales and shipping system becomes visible in the detail screen of the purchase order item in the purchasing system.
7. & 8. Delivery, Shipping Notification
A shipping notification can also be sent to the purchasing system at the same time that the delivery is made. The shipping notifications are sent using the message control, transmission medium "6" (EDI).
9. Shipping Notification as Acknowledgment
The incoming shipping notification is treated as an acknowledgment of the purchase order in MM.
Since an accounting system can be installed in various different scenarios, the following kinds of communication are all possible. In each of the three cases, an invoice is sent from the shipping system to the sales system.
Central FI With Two Company Codes
There are two separate company codes for the decentral sales and the central shipping.
Sales and Shipping in Two Company Codes, Central FI
Central FI With One Company Code
Both functions are located in one company code.
Sales and Shipping in One Company Code, Central FI
Two Independent Companies
The two companies do not form a single accounting unit. There are two independent systems with independent accounting systems. The relationship between the functions is based on a customer-vendor-relationship, which means that invoices are written and that there is a flow of cash.
Two Independent Companies
If the central accounting is running on a third system, then ALE communication in both the forms Sales <=> Accounting and Shipping <=> Accounting will be necessary. If the central accounting is located in the shipping system, however, then only the decentral sales will need to communicate with the accounting system.
If both systems are in the same company code (case 2), then the valuation of the material may not be changed as a result of the stock transfer. If the valuation of the material is based on the standard price, then the standard prices have to be same everywhere; if valuation of the material is based on the moving average price procedure, then the value of the material in the sales and shipping system has to be the same as the value of the goods received in the purchasing system.
Note the following:
This means that "sales and shipping systems" cannot operate as profit centers by posting revenues from internal sales.
If the two systems are in different company codes, these restrictions do not apply, since the differences can be taken care of in the consolidation. However, it is important to note at this point that the consolidation in Release 3.0 is not able to resolve the differences automatically.