Diagnosis
You are on an item entry screen and have entered item category &V1& foran item.
The item category is used to link an item to a specific SAP object.Item category &V1& requires you to enter an item with class data.

Procedure
If you want to enter an item with item category &V1&, enter the datefor a class (class type, class).
You can cancel entry of this item by choosing the system-wideCancel button.