Diagnosis
A bill of material exists for material &V2& for trading contract itemV1. however, it is not possible to determine an item category for thetrading contract item from both the corresponding data for the bill ofmaterial data and the corresponding Customizing data.

System Response
It is not possible to process the item further.

Procedure
Extend Customizing for the item categories for the trading contract.Check the settings for the item categories for the trading contract withthe settings for item category determination for sales. Ensure that theitem categories you use from sales (sales order) also exist in tradingcontract Customizing.