Surface too dense to export

I’m trying to Create Design for my jobsite, and I’m getting an error message saying my surface is too dense to export. Has anyone ever had this issue before? If so, how do I get around it? I haven’t done anything different for this Model, it is just a simple site prep.

Can you share it at all?

send a screenshot of your wireframe

without seeing it my guess would be you have contours in there that have too many vertices which creates a bunch of unnecessary triangles