
Logistical Processing and Project Stock
Purpose
From a logistics point of view you work with project stock in complex make-to-order production if:
Process Flow
Activating Requirements
In the Project System you can create various types of material requirements for project stock. Project stock reservations or purchase requisitions are generated using material components in networks.
A distinction is drawn between advance procurement and normal procurement for both non-stock components and stock components.
See
Internal Procurement of Materials and External Procurement of MaterialsIn the case of
advance procurement, you can only use reservations to trigger advance requirements if the relevant network activity does not consume the component itself.Material Requirements Planning
You can execute an MRP planning run for each WBS element that has its own project stock.
MRP-relevant planned independent requirements are created when you assign material in the network. Depending on how you have maintained the control data in the material master, the MRP planning run generates planned orders or purchase requirements assigned to the WBS element The same is true of dependent requirements, which are generated using multilevel BOM explosions, provided the material in the BOM is also managed on an individual basis.
See
Material Requirements Planning in BOM TransferIn-House Production
If planned orders are converted into production orders, the production orders and the components held in stock for them are assigned to the WBS element which is to carry the stock. Subsequent documents, such as material reservations and purchase requisitions, inherit this assignment via MRP-controlled components.
The production orders for semi-finished goods deliver the materials produced into project stock. You can then issue them from project stock to the productions for materials further down the production chain (superior items in the BOM).
External Procurement
You can create purchase requisitions for material components that are accounted to stock in the following ways:
-
By converting planned orders-
Using the MRP planning runYou then assign the purchase orders so generated to the stock-bearing WBS element. In purchasing, the purchase requisitions are then converted into purchase orders.
When you receive materials procured externally, you first post them to project stock. You can then reserve materials for the network or production order. The processing is different to direct procurement for networks (account assignment category F and account assignment object network or network activity).

In the standard system, account assignment category Q is used for items in purchasing documents
The stock-bearing WBS element acts as the account assignment element.
Material Movements
All material movements relating to materials managed as project stock pass through project stock. You post such movements using MM movement types, with special stock indicator Q.
For more information, see the Materials Management (MM) component.

Material components with a negative quantity represent issues of material from the network activity to stock. The material is delivered to project stock.
See also:
Assembly items Delivery from Projects