If you have activated automatic staging, the system will request all pick parts in a production order automatically when it is released.

When you use this exit, you can automate the generation of transfer requirements during WM staging for production orders. More detailed information is available in the report documentation (MWMPP001).

For automatic WM staging, you need to ensure that each transfer requirement created by the system contains all components that are relevant for WM staging. You can make a setting in Customizing that prevents the generation of incomplete transfer orders. With this setting, the system will not create transfer requirements unless it contains all relevant components. Additionally, a message is entered in the log that references this error. You define this function in the warehouse number control section in Customizing.

When the system creates transfer requirements, the required quantity of the components is copied over as the requested quantity as a default entry. Even when the material is not available or is only partially available, the total required quantity of the components is carried over into the transfer requirement quantity. This could result in the creation of transfer orders for production orders for which there are insufficient materials available. On the other hand, materials may only be partially supplied or not supplied at all for production orders for which the available quantity was actually confirmed.

You can define in Customizing that the confirmed quantity of a component is to be carried over as the requested quantity.

When you create transfer orders for transfer requirements that include the picking requirements for a production order, the quantity can reduced if you determine that there is a surplus quantity (available stock) in the (fixed) storage bin in production.

The reserved quantity is the quantity that was requested in orders for a particular production storage bin, minus the quantities already removed from this bin. The system only calculates positive quantities. Transfer requirements that are created manually are not taken into consideration. All transfer requirements that refer to a production order are taken into consideration. In these transfer requirements, items that do not refer to open reservations (for example, transfer requirements that refer to deleted reservations or to a production order that has been technically completed) are not taken into consideration.

The reserved quantity is deducted from the total of the available stock and stock to be placed into the bin as well as the open transfer requirement quantities. The positive difference is the available stock that is deducted from the transfer order quantity with respect to the transfer requirement quantity.

The individual tasks are clearly defined. In production, the WM material staging process is initiated for all released orders and the warehouse is responsible for processing all open transfer orders. During TO creation, only those quantities are transferred that have not been moved to production for other reasons.