Hello all,
in waveguide port I am evaluating the impedance of common mode. I am getting error as "port mode calculation failed" and "On port 1 multiple potential definitions of the same set are located on one conductor, or a symmetry condition is incompatible with the potential definitions.
(Please check the potential definitions and the symmetry conditions.)". What should I do to solve this problem? Screenshot for reference.

CST Studio Suite ​​​​​​​