Diagnosis
You have assigned an InfoObject (BW system) to the field (data element)from the DataSource (source system) in the active version (A version).However, this assignment is missing in the delivered version (Dversion).

Procedure

Checks and corrections in the BW system (Administrator Workbench:Transfer rules for the InfoSource)
Do you want to deliver the assignment of the InfoOject (BW system) tothe field from the DataSource (source system)? In this case, regeneratethe transfer rules.