surface problem

Hi

I have a problem with my model, one of my surfaces is deformated and the program can't make the mesh, when I try to do it that part disappears, that only happens in one side of the model. Originally is a Solidworks model, I don´t know if its a problem relationated with the origin or if I have to do anythin<?xml version="1.0" encoding="UTF-8"?><?xml version="1.0" encoding="UTF-8"?><?xml version="1.0" encoding="UTF-8"?>g else to solve it.