Cause

A part was determined in the parts database whose part number has a blank at the beginning and / or at the end.

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 General.
4. Delete the blank at the beginning and / or end in the Part number property for the respective part in the value field of the property.
5. Click [Apply].
6. If required, start a new check run.
7. Close the parts management and perform a parts data synchronization.