Cap on the amount of remaining aps

The max limit for AP is 255. I remember from GMS Tespia (it was a pain to manually enter all those AP's in >_<"). Afterwards, I get an error when I try to level via Cody. I'm pretty sure they did not just go into MP, but rather just disappear.

Can you take a screenshot of your SP window? I want to see if that hit the cap yet.