Hello Vivek Tol,
The sabresd_6dq_car-userdebug profile is defined but it’ not listed on the Release Notes of the BSP as part of the supported images so I would recommend using the sabresd_6dq-XXX images instead. The image should run on the i.MX6 Dual/Quad SABRE SDP, but since it’s not listed it is not supported as sabresd_6dq_car-userdebug.
Regards,