Flow Simulation Issue

Hello All,

I'm back with more question(s). I just started to learn Flow Simulation. I been viewing many videos on this topic and have almost completed by first project, however. "That's Why I'm here!" I come up with a message when running the project for Results. Here it is.

It is not possible to calculate the internal task, if there are mass/volume flow openings but no pressure boundary conditions defined.

I've attached a screen shot to hopefully help.

Thanks in advance. I'm sure this will not be enough info

KenJG