# How to fix geometry errors

There can be basically two errors and two possible complications.

Errors:

Complications:

Errors:

**Hole in the geometry surface mesh**- Can be fixed by manually creating triangles one by one or closing it at once with "*Geometry->Edit Faces->Close hole*"**Intersected triangles**- Discover with "*Geometry->Edit Faces->Find Intersected Triangles*" and fix with "*Geometry->Edit Faces->Break Intersected Triangles*"

Complications:

**Very small distance between nodes (near nodes)**- Can be fixed with "*Geometry->Edit Nodes->Merge Near Nodes*"**Too small or too slim triangles**- Can be fixed with "*Geometry->Edit Faces->Collapse Face Elements*"