Im expanding what has been stated already just to try and make this as clear as possible for you.
You have bought 3DXchange pipeline which is the tool that gives you 2 basic functions
1) import content made in other software for use in iClone
2) export iClone/CC content for use in other software.
There is more uses but that's the basics
iClone and CC come with a set of basic contents, for example the default avatars mentioned by Kellytoons but there are also some default clothes, props etc etc that come with iClone and CC.
All of these default contents you can export without any problems and when you export them the fbxkey gets automatically created. The fbxkey is needed if you want to modify the content in a 3D modeller and then import it back into CC. You must have the fbxkey to import the content back into CC for example. But that is only needed if the content originally came from iClone. If you completely make your own model then fbxkey is not needed.
The error you posted has nothing to do with what I mentioned above
Rather it relates to purchased content from reallusions store or the marketplace
When you buy content (clothes/ characters/shoes etc) you have the choice of paying for its use in iClone/CC only or you can pay a bit extra to enable you to export that content for use in other applications.
That bit extra is what gives you the right to export the content from CC or iClone. That is what the export licence is. Either the character you are trying to export or some of the clothes or maybe even the morphs are something you have purchased but didn't pay for its export licence. Without the export licence you can only use what you bought in CC or iClone.
You can always go to your account and upgrade the things you have purchase so you have the export licence for that content.
So the message you are getting relates to content you have purchased.
Export content that came with CC and iClone by default or buy export licence vesions of purchased contents and you wont get that message
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