Diagnosis
You are using unplanned material exchange (UME) in the SubcontractingMonitor. In the dialog box, you have not selected interchangeablematerials for the material from the original purchase order item.

System Response
The system cannot carry out UME unless you select at least one of theprovided materials.

Procedure
You can do one of the following:

• Select materials relevant for exchange by entering the required
quantity.
You do not have to select the relevant line; the system considers allentries with a quantity that is not initial as relevant for theexchange.
Ensure that the total entered quantitiy does not exceed the quantity inthe original purchase order item.

• Reset the UME by selecting Cancel.