Importing Iges File, some artifacts


I was importing iges file and seems there is an loop like artifact. As attached.
(I can’t upload the file, as confidential), but is this due to corrupt data? or
something I can just ignore?

Most likely this means that a surface was not able to be trimmed by Rhino - probably because the original trim curves are out of tolerance - so you are seeing the untrimmed surface. Look where it intersects the rest of the object(s) and you will probably see how it’s supposed to be trimmed - but you may need to fix the surrounding surfaces in order to do so.

Thanks! I’ll check it up close.