Hi,
I've the problem indicated in the attached file.
I resolved deleting some face with the delete face function, but sincerely I'm looking for the reason about that or alternative to my solution.
I asked to some friends and SE and NX have an option in the cutout that doesn't produce this error, so the Parasolid limitation can be bypassed by a good implementation as is made by Siemens CAD.
SolidworksSheet Metal