Taylor Robertson
Ansys Employee

Hello Martin,

It seems to me that the list of facets would be problem. This should be a list of np.arrays, with each entry correnponding to a single facet. Not an NP array of the facets.

https://optics.ansys.com/hc/en-us/articles/360034901573-Planar-solid-Simulation-Object

The following are methods of a session handle, so they should be used like fdtd.addplanersolid(),

addplanarsolid()
set('vertices',vtx)
set('facets',a)

I would suggest using putv and compare vtx and a between the API and lsf methods. However if you have a method that works in lsf pehaps you can just use fdtd.eval('' lsf script'')

https://optics.ansys.com/hc/en-us/articles/360041401434

Best Regards,