Diagnosis
You attempted to insert an object in the costing structure. However, anobject can only be inserted in a cost estimate if the relationshipbetween the higher-level object and the lower-level object was definedas "allowed" in Customizing and the object contains the samevalues in the key fields as the higher-level object under which itshould be inserted.
The object cannot be inserted here since the object to be inserted andthe higher-level object differ in key field &v1& (value &v2& or &v3&).

System Response
The object cannot be inserted in this position in the cost estimate.

Procedure
Copy the costing structure and insert the copy in the key area of thestructure.