** WARNING 305390 ** Altogether there are '#' nodes on the surface of the tetrahedral portion of the mesh with a local geometry problem. The connected tetrahedral elements at these nodes subtend less than 0.1% of the surrounding solid angle, meaning there is a sharp spike in the mesh surface. This may reduce the local solution accuracy. You are advised to inspect the mesh around the above nodes and check that the local geometry is what you intended. If not, consider improving the tetrahedral portion of the mesh using the Mesh Repair tools, or even remeshing.
A problem with the geometry or meshing of your model has caused a sharp outward spike on the part surface. This type of spike will often reduce solver accuracy in the local area. To ensure the most accurate solution, you should fix this problem.