Hi Darryl,
On the screen shot of my previous post, you can see for each control of synthax of each entites a result with a red cross or green mark on the left side.
In attached file, this is the screen shot of the synthax checking of the top design.
This checking is OK with a green mark on left side.
I don't understand what is wrong.
Maybee a big error from a newbee ...
Thank you for your help.
Frédéric.