More than 15 APs on Common App?

The Testing portion of the Common App includes 15 slots for “AP Tests you wish to report, including tests you expect to take.” I’ve taken 10 exams so far, and plan to take 8 more in my Senior Year. Is it necessary to report those I haven’t yet taken, if they don’t fit into the 15 slots? And if I should, where can I put the additional tests that will not fit?

You can list any/all/none. If you want to list more than 15, you can use the add’l info section.