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 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 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. Close the parts management, save the modified data, and carry out a parts synchronization.
6. If required, start a new check run.