Cause
The x- / y span of a placed part was changed and now differs from the property Width / Height of the part being used.
If the part property Width / Height of the part have been changed in the parts management and the x / y extension of the corresponding part placement is the same, this message also appears.
Solution
Check the x and the y extension of the part placement. Also check the dimensions of the part under Width and Height in the parts management. The x extension and width as well as the y extension and height must match up! If the values do not match, adjust them.
Then start a new check run.