In the Japanese version, there are Class Excubes that are required to get an extra Skill Point via a Client Order. However, usually, the description of the Client Order in the Japanese version just states what is said by the NPC when they talk to you upon accepting it. An example from the Etoile version of this is that the character says You have to take an "Ascension" quest/mission/trial or whatever. However from what I can tell, nothing like that exists. The Client Order's availability is also available at the same time as your last level-cap unlock/increase quest (IE: 95 cap.) They are unrelated of course, as completing the final level cap Client Order just unlocks the final level cap.
So I've been wondering, does anyone know where to get them? Because this will be an issue for future players if the Client Order text is indeed as vague as it is in the Japanese version.
A player needs to be at level cap and fill their EXP bar to get a class excube. The treasure shop sometimes sells them too.