SAP Knowledge Base Article - Public

2937898 - Material Planning on Multiple Sites


You have two different Sites where you store your Stock. You operate Site A as your main site and from there you ship Products to your customers. While Site B functions only as a storage location. Now you are looking for a way you can utilize the Stock levels of both Sites within your Material Planning run, so that when there is a Demand the following is executed:

  1. When there is no stock available at Site A, an Availability check is triggered for the stock at Site B.
  2. If there is stock available at Site B, the system creates a Stock Transfer Proposal from Site B to Site A.
  3. If there is no stock available at Site B, the system creates a Purchase Proposal for Site A.


SAP Business ByDesign

Reproducing the Issue

  1. Navigate to the Supply Planning work center.
  2. Go to the Products view.
  3. Find and select the relevant Product.
  4. You can see the Product is assigned to the Sites A and B.
  5. Select the Row with Site A.
  6. Click the Open button to open the Product Planning Details screen.
  7. You can see there is a Demand, but the Available Quantity is not sufficient.
  8. Click Run Planning, and then choose Single BoM Level or Multi BoM Level.
  9. Now you expect that the system creates Stock Transfer Proposals since you have enough Quantity at Site B.
  10. Also, in case there is not enough or no Quantity at site B, you want the system to create Purchase Proposals.


The best way to achieve your requirement is to maintain the Source of Supply Priority Rule. However, in order to avoid the system creating Transfer Proposals even when there is no Stock available at Site B, we recommend you maintain a List Price of the Product with a given supplier.

The system should then create a Purchase Proposal if there is no Stock available at Site B.

Please see also the help document “Source Determination in Planning”.

For “Source of supply priority rule”, the order the system follows is:

  • Transport Lanes (Internal):  if there is a valid Transport Lane for the system to do the Stock Transfer Order, this is the first option.
  • Released Planning Models (Internal) – the system will check if the Product can be produced, meaning if there is a valid Production Model maintained. If yes, this is the second option.
  • Purchasing Contracts (External) – creating a Purchase Proposal is the third option taken by the system to determine the source of supply, it checks for Purchasing contracts.
  • List prices (External) - creating a Purchase Proposal is also the fourth option taken by the system, it checks if List Prices are maintained.

See Also


ATP, MRP, Multiple, Location, Planning Area, Stock Transfer Proposals, Purchase Proposals, Production Proposals, Priority, Source, Supply , KBA , AP-SDM-MRP , Material Requirements Planning , AP-CR-CR , Customer Requirement , How To


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