This discussion has a screen snapshot of how to add keyopts to a body.

Right now, the site is a bit broken and you can't Insert Image or Attach files to Replies.

I don't know what your model looks like.

  • Is it 2D or 3D?

  • If it is 2D is it Plane Strain or Axisymmetric?

  • If it is 3D is it meshed with Tet element shapes or Hex element shapes? 

  • Is the Element Order set to Linear or Quadratic? 

Each of those choices changes what Element Type is assigned to the elements.
After a Solve, the Solution Output shows what Element Type was assigned.
Different element types have different keyopt settings.
Look up the element type in ANSYS Help > Mechanical APDL > Element Reference > Element Library