Hello Erik, thank you for your answer. 

When I choose MPC type - I can only choose the edge of the solid body (the face doesnt work) and the edge of the surface and the shell is NOT midsurfaced. The surface of the upper part of the tube gets only thickened to the inside. 

The element order is already quadratic. 

Does the surface need to be midsurfaced for the midside node connection? Because in this project a midsurfaced shell which gets thickened to both sides is not possible.

Where can I find a compatible mesh, multi-body part and the shared topologie? In spaceclaim? 


Would you recommend to just move the connection far away from the area of interest?