Ahh....what is this??

[craig_meredith2003]

http://gyazo.com/91c995aba695dfc740f250a0b5fe7171

Summoner needs Arcanists(30levels) and Conjurer(15levels). He only has Arcanist that 32levels but he is Summoner.
There are many such characters. How should this be explained?

summoner is thaum 15 not conj, conj at 15 would be for scholar