Message SAP WVA102 - Cross-selling determination could not take place for item &1 (reason &2)

Diagnosis
In certain business transactions, the standard system cannot determineany cross selling due to reason &V2&
Explanation of the reasons:
1 Lower-level item
2 Bill of material
3 Product selection
4 Configurable item
5 Generic article
6 Delivery schedule/scheduling agreement
7 Item with active ingredient management
8 Item without schedule lines
9 Free goods item
A Product proposal