Maintaining Interchangeable Parts in the Goods
Receipt Process
Use
You may need to exchange parts in the goods receipt process when the parts that have been received are different from the parts in the purchase order.
Prerequisites
If you want to be able to update the purchase order and exchange materials during the goods receipt process, authorization object M_PIC_EXCH has to be included in the user profile.
Procedure
To exchange parts in the goods receipt process, proceed as follows:
1. Enter transaction code MIGO to create the goods receipt document for the purchase order.
2.
In the item overview, choose 
Material
Exchange (Mat Exchg) next to the material
in the item overview.
The Material Exchange tab page appears in the foreground.
You can also navigate to the tab page for the items that have this material exchange icon next to the material description. For non-interchangeable materials, this icon does not appear.
3. In the column Quantity, enter the quantity you want to be posted in the goods receipt document.
4. Press Enter to create a subitem for which you want the material document to be created.
The data is inherited from the main item when the subitem is created. However, if any changes occur to the main item once the subitems have been created, these are not taken over to the existing subitems.
5. When you choose Check to check the item, the checks are performed on the main item, which contains the obsolete material. No checks are performed for the subitem. A warning message: Check of the interchangeable item will be performed during posting (message number ADPIC001) is displayed in the application log.
6. Choose Post to update the purchase order with the new subitems and post the material document for the subitems.
If there are any errors during subitem creation in
the purchase order, an interchangeability error log is created. You can access
this log by choosing 
on the screen between the item overview and
the item details.