I’ve completed my project, and just when I thought I’m ready for publishing it to the App Store, I get this build error:
“Error building Player: Couldn’t build player because of unsupported data on target platform.”
I keep getting this error telling me that something is unsupported. But what?
I’ve tried so much. I give up. I need somebody’s help.
Is the provisioning profile setup correctly and installed on the device?
How do you set that up and install on your device? I have registered my device with my developer account, but I didn’t know there was more to it. Please reply. 
Btw, I am still in the Unity build stage. I get this error when trying to build in Unity.
There is a LOT more to it than that. You need the proper certificates, provisioning profiles, an App ID, and to do an Xcode build for distribution (not the same as regular build).
I suggest you read this:
https://developer.apple.com/ios/manage/distribution/index.action
The Xcode stuff is out of date, so when you get to that part go here instead:
http://www.weston-fl.com/blog/?p=2442
Make sure you don’t skip step 3.
Got any clue on what could be wrong?
OK, thanks, but the error is happening in Unity build.
You’re using a feature that isn’t supported on the iOS?
Yeah, but I can’t find out what feature isn’t supported in my game.
Is there any iOS unsupported feature list?
See here:
http://unity3d.com/unity/licenses.html
Terrain isn’t supported unless you’re using Unity 3.4 or higher.
This is confusing. I am not using any of the features that are unchecked. 