fault of closing surfaces

[iron72]

Hello.
I'm working with the surfaces. I have built all my surfaces, bound and united.
then when I have to close the surfaces to make it solid, I see this error:

closing operator: it is not possible to close an opening in the selected body
with a flat face. check all body openings for flatness.

What is the analysis tool for this type of error?
Thank you.

 

[robcrac]

means that there is a hole, and that this hole does not manage to close it with a flat surface. to find it, from workbench generative shape design, select the boundary command and your skin, in isolated mode (create reference). you will get the edge of the missing face

 

[iron72]

excuse my impediment, but I have a version in Italian of catia, could you send me a picture of what I have to select to do a surface analysis?

 

[barlafus]

excuse my impediment, but I have a version in Italian of catia, could you send me a picture of what I have to select to do a surface analysis?

tools/customize that in Italian plays as tools/personality (google translator source, http: //translate.google.it/#en '%t') and then see attached image.
(boundary = edge, source barlafus)

once put in English it will be easier to follow the advice of robcrac

enjoyment

 

[iron72]

Now I started the surfaces and as I go on I make the union, only that I came to a point where after the union tells me that they are two domains and if I say yes to analyze, it indicates with a yellow arrow and a label the point of error of continuity.
what could be error on the sketch that drags behind everything, or can it be a surface modeling error?