iTunes software service authentication error domain error 434

Question

I am uploading iPhone application using latest xCode 8. I have good internet connection and all the relevant settings set up at iTunes connect. My distribution profiles are also

Answer 1

In my case, I have checked iOS provisioning profile from developer website and found the one related to my app was invalid.

I have regenerated (all invalid) provisioning profiles and download it from xCode -> preferences -> accounts. This resolves my case.