Diagnosis
You have defined plan characteristic &V1& in the planning step used.
However, plan characteristic &V1& also has characteristic &V3& in themaster data table key. Characteristic &V3& does not, however, exist inthe planning hierarchy or it contains a planning level belowcharacteristic &V1&.
Characteristic value &V2& for plan characteristic &V1& cannot be usedif it does not compare with the data in the master data table.

Procedure
Include characteristic &V2& in the planning hierarchy abovecharacteristic &V1&.