Although the automatic AutoCAD Map 3D editing
tools can correct many problems, you may need to edit a drawing
manually. Use commands such as FILLET, TRIM, and EXTEND to correct
situations like those shown in the following illustration.
these editing commands to edit a topology can corrupt the topology.
Instead, use the Editing
You can also use object
grips to correct errors. Using grips, you can quickly correct overlaps
of coincident boundaries, such as county lines and roads or geological
boundaries and fault lines.