"The physics can not be taken into account" message

Screenshot 2021-04-14 at 14.07.06

Hello,
I got this message when generating my mesh. I looked back at everything just to check if I messed something up but nothing was wrong. What would be the solution?

Thanks

https://www.simscale.com/workbench/?pid=352616361915670755&mi=spec%3A732fdc78-a305-403e-80f9-8ba6929d5f78%2Cservice%3AMESHING%2Cstrategy%3A79&sh=78

Hi there :smiley:
This is because your Velocity inlet has no input for none of the vectors. Is it intentional?

Best regards,
Fillia