Erik Kostson
Ansys Employee
HI
I am still puzzled I do not know why it asks for FSUM which is as I said apdl command and not rigid dynamics (which is another solver) - perhaps someone else knows.
Do you have any flexible bodies (you should not be able to), and can you show the details of the force reaction probe?
Since you have also joint rotation, use the joint reaction probe instead.
Thank you
Erik