Using Inventory Management you can use strategies for material withdrawals for goods issues and stock transfers on the basis of predetermined Customizing settings. In doing so, the system determines the order in which the desired material is to be removed from stock and from which kinds of storage types and from which batches, based on the material requirement that has been created.
The system executes stock determination in conjunction with the Warehouse Management system (WMS) during transfer order creation. In doing so, the system only takes into account own stock and consignment stock.
During stock determination in warehouse management, the system does not consider any pipeline stock or valuation types.
If you combine stock determination from Inventory Management (MM-IM) with storage type determination from Warehouse Management (LE-WM), you define how the Warehouse Management system (WMS) connects the withdrawal sequence determined by Inventory Management with the user-defined stock removal strategies.
Refer to the IMG documentation for information on the interaction between Inventory Management and WMS.
Stock determination takes place in the Warehouse Management system (WMS) during transfer order creation. The following stock determination scenarios apply:
Stock Determination in Inventory Management First
If you activate stock determination at Inventory Management level first and the system forwards this data to the WMS, the WMS removes the stock that was found at IM level from storage. In this case, the WMS executes the IM activities and stock determination is not possible at WMS level.
Stock Determination With Reference Document
If the reference document is an outbound delivery, the WMS determines the stock to be removed from storage according to the stock determination strategy that you defined in the Customizing for Warehouse Management. The system triggers the staging of the stock that is to be removed from storage and transmits the stock found to the source outbound delivery. As soon as you post the goods issue for the outbound delivery, the system reduces the amount of the corresponding consignment stock or own stock.
If the reference document is a production order or a process order, the WMS also determines the stock during transfer order creation. However, the WMS cannot confirm the data on the consignment stock or own stock that has been removed from storage from the transfer order to the source production order or process order.
If you also want to take into account consignment stock during material staging in the WMS, for example for the components of the production orders, choose SAP Menu ® Logistics ® Logistics Execution ® Internal Whse Processes ® Post Change ® Bin Stock ® Other Posting Changes. Using this report, the system searches for all quants in the production interface with special stock typeK (consignment stock) and makes a transfer posting to production.
You can find more information on stock transfer posting in the documentation on report RLLQ0200.
Stock Determination Without a Reference Document
For stock determination without a reference document, there is no source document upon which you can base the stock determination. You trigger the stock removal process in the warehouse yourself, for example for stock transfer within the warehouse based on ABC analyses.
Stock Determination Strategies
You can define the following stock determination strategies:
During stock removal, the WMS first of all considers the stock category that is defined for stock removal according to the stock determination strategy. The system searches through all storage types given in the stock removal sequence for corresponding stock from the desired stock category.
According to the stock determination strategy, the consignment stock of vendor X should be removed from storage first, followed by own stock. The system searches through all the storage types of the stock removal search sequence (for example 1. high rack storage, 2. bulk storage, 3. small parts storage area). If no consignment stock is available, the system then searches in the storage types given in the stock removal search sequence for own stock.
During stock removal, the WMS first of all considers the storage types given in the stock removal sequence. The stock determination strategy decides within the individual storage types which quants are taken for stock removal.
According to the storage type search sequence, the goods are to be removed from the high rack storage area. Within this storage type, the stock determination determines that first of all material from the consignment stock is to be staged for stock removal. According to the stock determination strategy, if this kind of stock is not available or is not enough, own stock is to be removed from storage.
The Warehouse Management system (WMS) removes the necessary quantity from storage regardless of the stock category of the material and, in doing so, only considers the stock removal strategy defined in the WMS (for example FIFO). In this case, the oldest quant is removed from storage, regardless of whether this is part of own stock or consignment stock.