appeal a rejection

I got two rejections today (unsucessful) and one is from my top choice cardiff. I'm a US international student so I emailed all my schools after I applied if I can send my transcript as some have GPA requirements and consider A's honors classes equal to a 5 on an AP exam. The cardiff admissions emailed me saying no need as my AP exams are above the entry 4,4,3 and I have 5,4,4 with a 5 in human geography (I applied for the geography & planning course). Also my SAT score is above the minimum and my major is uncompetitive.
Can I ask for an appeal or reasons on why they rejected me? They didn't give any on UCAS.

I got two rejections today (unsucessful) and one is from my top choice cardiff. I'm a US international student so I emailed all my schools after I applied if I can send my transcript as some have GPA requirements and consider A's honors classes equal to a 5 on an AP exam. The cardiff admissions emailed me saying no need as my AP exams are above the entry 4,4,3 and I have 5,4,4 with a 5 in human geography (I applied for the geography & planning course). Also my SAT score is above the minimum and my major is uncompetitive.
Can I ask for an appeal or reasons on why they rejected me? They didn't give any on UCAS.

damn, I also applied to Cardiff (human geo) as a US international student. I have similar grades to you, haven't heard back yet. when did you apply?

Ask them.

You can ask why your application was unsuccessful, although they are not obligated to respond.

If they respond it may be very generic ("very popular course / high number of applicants this year / not all strong applicants receive an offer / etc.), or (if you're lucky) they might explain their reasoning in a way which allows you to challenge their decision. For example, they may say that you don't meet the entry requirements (when you do), or similar.

I was lucky I guess. I emailed them and they replied it was a mistake.

Thank you! I did and they said it was an error and changed it to an unconditional offer!