Can you challenge an application outcome?Watch
You can ask for more specific feedback if you felt that you met the academic requirements of the course, (but bear in mind that does not guarantee an offer).
I would request more detailed feedback, move on and learn from the feedback provided to get onto a different course.
If its just that they thought others had a stronger application then you cant challenge that. If its because you were black or done contrary to their own rules then you could challenge that. Best you can do is ask for feedback, but theres no reason they have to give or be helpful.
Meeting their requirements is meeting the min requirements to be considered.