Direct Procurement If you assign components that are procured directly to a network activity, the system generates a purchase requisition for the material. A purchase requisition is an internal document that defines the requirements of a material or a service. This document authorizes the purchasing department to procure the material in the quantity specified for the specified date.
You determine whether a purchase requisition is created for each material or whether one
collective requisition
for all externally procured materials and services is created per network in Customizing for the
Project System,
by choosing
.

Direct procurement is initiated in the following cases:
In general for components with item category N
For components with item category L that have either globally in the
material master
or individually in the
BOM item
Direct procurement
set in the
Special procurement
field.
You can also change the procurement type for a BOM item using the special procurement key but without changing the item category, which you can only do by deleting the item and creating a new item with a different item category.
Externally procured materials can be delivered directly to a customer site or other location when you place a third-party order . You specify the address in the network and can use the same address for several components, or retrieve an address from one of the address databases in the SAP system.