INCOMPATIBLE KINEMATIC CONDITIONS

Hello Guys,

While running a simulation, I got warning 'INCOMPATIBLE KINEMATIC CONDITIONS IN MODEL.' I am analysing crash case. First, I created rigid and then I applied initial velocity on the rigid node. As my initial velocity is in the Z direction, so while creating rigid, I keep DOF 3( translation along the Z axis) of rigid unconstrained. So, why I am getting this warning? Is there another reason to get this warning?

Thank You for your help.