Description of IOAF codes?

I run into a number of IOAF error codes during development. Can someone please point me to the documentation that describes these error codes? If not, can someone chime in with a description of the code and a high level description of the types of errors that could potentially trigger the respective IOAF error code?

3 Replies

If you're seeing one, it's probably an Apple kernel or driver bug and you should file a bug at

If you can provide info on what you're doing and what code you're seeing, we might be able to offer a workaround.

Sad! I have it on iOS 11..

Thanks Dan. They disappeared once we moved over to Xcode 9.