Typically, you preplan goods issues (GIs) and transfer postings with a reservation, but you can also preplan goods receipts (GRs).
Preplanning of transfer postings is only possible for transfer postings in the one-step procedure, from storage location-to-storage location (movement type 311) and plant-to-plant (movement type 301). The preplanning of GRs with a reservation should only take place in exceptional cases. If you are using purchasing and production, then GRs are planned with purchase orders (POs) and production orders. Receipt reservations are not necessary.
Reservations can be created both manually and automatically.
To the automatically generated reservations belong the following:
- Dependent reservations:
These reservations are for orders, networks, and work breakdown structure (WBS) elements.
When you open an order, network, or project, the system automatically reserves the warehouse components.
Although you can display dependent reservations, you cannot maintain them directly. For example, you cannot change a dependent reservation for an order directly, but need to change the components in the order. The system then automatically updates the reservation.
- Stock transfer reservations:
These reservations plan transfers between storage locations. If, for example, reorder point planning is managed at storage location level, and the available stock falls short of the reorder point, the system creates a stock transfer reservation in the plant with the amount of the replenishment quantity.

