As the question says. Plus Which do I use for GS in the Publishing section of GS? The cookbook hasn't been helpful since it seems the pics etc are now outdated and no longer match the current GUI.
The ID would be the one starting com.xxxx.xxxx
Might be wrong, haven't published on Amazon for some time.
cant be since mine generated by amazon is like this: amzn1.devportal.mobileapp.d786f003b9dd49c3b59ee659eXXXXXX