Cause

In the parts database to be checked a part was found where no trade is entered.

Solution

1. In the parts management mark the line with the message in the Messages tab and select the Go to popup menu item for this line.
   The respective part is marked in the tree view of the parts management.
2. Bring the Properties tab to the front.
3. In the property table open the hierarchy level Trades.
4. In the value field activate the check box on at least one of the listed trade properties.
5. If the part has subtrades, open the hierarchy levels of the corresponding subtrades with the indexed properties and enter a designation at the desired property.
6. Click [OK].
7. Click [Apply].
8. If required, start a new check run.
9. Close the parts management and perform a parts data synchronization.