Error message "Found a boundary condition with faces that do not belong to the mesh "

Hi ! I am trying to run an conjugate heat transfer v2.0 simulation. When I try to run it I get this message.

Someone could help me please ?

It is likely that you assigned a boundary condition to a face that is part of a contact (which is not possible). Only the external-most faces (i.e. external walls) or faces adjacent to an internal void may receive boundary conditions in CHT analyses.

Thank you very much !