SAP Message UACE016 - Key (&1) is incomplete for type &2

Diagnosis
You are importing data from a non-SAP system. The import creates objectsof type &V2&. However, of the key fields of this object type, the systemwas only able to import the field &V1&.

System Response
The import cannot be executed.

Procedure
Notify your system administrator.

Procedure for System Administration
Check the key of object type &V2& (in IMG go to Costing Solutions -Structures - Maintain Costing Structures for Data Basis). Then, go tothe mapping of the imported fields and add the missing key fields (inIMG go to Costing Solutions - Import - Import from R/3 - Assign Fields).