Unable to create constraint for selected geometry

Hello, I have this problem regarding this swept surface with the option thick surface, that models the cup of a battery case. Then I have extracted the surface and put it into a geometrical set. I have to mate the cup with the bottom part of the battery case which is also  a swept surface, but it happens that when I have to mate the surface in the assembly gives this error. Please help me fixing it...

 

Edu 3DEXPERIENCE CATIA