Outstanding usually means that you've yet to fulfill those requirements. Before, it said that all the requirements were met because that's what you needed for first year. Now that you've chosen a program for the rest of your years at Mac, you have new mandatory classes that you need to take.
Now, the Degree Audit is basically a breakdown of all the courses you need to take to complete your degree. Usually there's several lists of courses with a number of units beside them. Just like the undergraduate calendar, you'll need to take that many units from the courses listed there.
So near the top, you'll see things like:
A. Outstanding 3 units
C. Outstanding 12 units
and so on right? When you see that, scroll down, look for the lists with letters beside them and you'll see how many more units you need to take from that list. So from list A you need 3 units, from list C, 12 units and so on.