Hyperworks_"PID" of CTETRA bulk data issue

Hi!

I am trying to analyze this geometry as a simply supported cantilever beam. I have meshed it with the 3D tetra mesh command. However, when I try to analyze it with Optistruct, an error would show up with a message attached below. I am assuming this might have to do with my meshing process since the incorrect data happens in CTETRA. Has anyone encountered this and know what might be the problem and how to resolve it?

Thanks a lot!!