patch antenna error simulation

Hi
Recently I use hfss to simulate a patch antenna but when i want to analyse all i have this error

Port refinement, process hf3d error: Port excitation is assigned to an internal face. Only allowed with lumped ports.

Are you using waveport? If yes, then try defining your waveport at the edge of the domain.

yes i use waveport , but how define waveport at the edge of the domain ?

Please see the attachment.

thank you Mr kohi_boy