Diagnosis
The Customizing settings do not allow you to pack material &V1& inloading carrier &V3& because packaging material &V2& is maintained asthe material group in the material master of &V1& and the packagingmaterial &V3& is packaging material type &V4&.

Procedure
Please assign material group packaging material &V2& to packagingmaterial type &V4& in Customizing.