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 General tab to the front.
3. Delete the blank at the beginning and / or end in the Part number field for the respective part.
4. Close the parts management, save the modified data, and carry out a parts synchronization.
5. Then start a new check run.