Cause

A cut-out was not placed completely on the mounting surface. "Not completely" means that the cut-out with its handles lies either only partially or completely outside the mounting surface.

Solution

1. Locate the cut-out in the layout space using the Go to (graphic) function from the popup menu in the Message management dialog.
2. Move the cut-out onto the desired mounting surface so that its handles lie completely within the mounting surfaces.
3. Then start a new check run.