Meaning: Some of the geometry defined in the .dgn file is not valid. Smart 3D displays the valid geometry, but ignores the invalid geometry.
Recovery: Edit the .dgn file to correct the invalid geometry.
Meaning: Some of the geometry defined in the .dgn file is not valid. Smart 3D displays the valid geometry, but ignores the invalid geometry.
Recovery: Edit the .dgn file to correct the invalid geometry.