Motion Source Waist Unknown. Cannot Get Pose

Hello Everyone,
I am working with VR using Steam VR, Open XR and HTC Vive. I have created a motion source for vive tracker and I have set the motion source to Waist.

But it keep giving me the warning:

LogHMD: Warning: GetControllerOrientationAndPositionForTime called with motion source Waist which is unknown. Cannot get pose.

And because it is unable to get Pose my tracker is facing 90 degrees in VR.´

If someone knows how to fix this issue the do let me know.

Thanks in advance
Best Regards