AAT LEVEL 3 DIPLOMA or AAT level 3 advanced diploma course

Hi guys,
I have 9 GCSEs, 1 Alevel at grade D, went to university to study Business Management and Economics and graduated as a 2:1. I would like to do ACCA or ACA but 1 A level I don’t think it’s the entry requirement so I would love to study aat level 3 course to put myself in a better position. Which one is better to study AAT LEVEL 3 diploma or AAT level 3 advanced diploma?

Please help me