Cause

In the parts database to be checked a part was found where no information for the Product group property is entered.

Solution

1. In the message management dialog mark the line with the message and select the Properties popup menu item.
   
   The Parts management dialog is opened, the respective part is already marked in it.
2. Bring the General tab to the front.
3. From the Product group drop-down list, change the "Undefined" default entry: Select a different entry that is offered from the list.
4. Close the parts management, save the modified data, and carry out a parts synchronization.
5. Then start a new check run.