!--a11y-->
Configuring Automatic Purchase Requisitions in the Sales System 
Use
This section explains the settings that are necessary in the sales system in order to create a purchase requisition automatically from the sales order.
The vendor is determined as a location using the rule-based ATP check (location determination) in SAP APO, and is then transmitted to the sales system. For more information see
Maintaining Business Partners and Configuring Location Aliases for Third-Party Business.The system automatically creates a subitem in the sales order. The system automatically creates a purchase requisition item for the schedule line of this subitem. The system determines the purchasing organization for this PReq from the sales organization (see section
Check Enterprise Structure Data).Procedure
Schedule line category CS (third-party business)
|
Field |
Value |
|
PO type |
NB (purchase requisition standard) |
|
Item category |
5 (Third-party) |
|
Account assignment category |
X (all auxiliary accounts) |
|
Incompletion procedure |
31 (schedule line with purchase requisition) |

For this transaction (item category ALES, schedule line category CS), the standard PO type NB and the standard account assignment type X (all auxiliary accounts) are set. For further information, see note 210997.
In the standard system, ALE third-party business uses the item category ALES with the following schedule line category assignment (see also Configuring Automatic Purchase Orders in the Sales System).
Assignment
|
Item category |
MRP type |
Default schedule line category |
|
ALES |
CS |
Example: Item category usage
|
Use |
Description |
|
APO1 |
Sourcing main item |
|
APO2 |
Sourcing own system |
|
APO3 |
Sourcing external system |
The following example shows the Customizing settings for the standard item category group NORM (see also Maintaining the Material Master). Using the item category usage described below, the system can propose the item category TAPA for the main item, and the item category TAN (standard item) for the subitem for deliveries from the customer’s own system, or ALES (third-party item) for deliveries from another R/3 system.
The following item category assignment is delivered as standard.
Example: Item category assignment
|
SD document type |
Item category group from material master |
Item usage |
Item category of superordinate item |
Proposal for item category: SD document |
|
TA |
NORM |
APO1 |
TAPA |
|
|
TA |
NORM |
APO2 |
TAPA |
TAN |
|
TA |
NORM |
APO3 |
TAPA |
ALES (see also Maintaining the Material Master) |
Note
Automatic generation of a purchase requisition can be stopped for various reasons:
You can use the incompleteness log for sales documents to track these transactions. In the standard system, the incompleteness procedure 31 is assigned to the schedule line category CS.