On Xcode 7 I keep receiving error "No accounts with iTunes connect access"
For me I had to remove my account from Xcode > preferences > accounts > Apple IDs by pressing the "-" bottom left. Then The "+" and adding back in my details. Nothing to do with Technical accounts being required. As being Admin gives you full access and privileges anyway.
Remove the Apple ID you're experiencing issues with from your Accounts list. Then, add the Apple ID back to the Accounts list.
Check System Status here first. ☞ System Status
Make sure you click and open the service you want. It could be green but may be down.
In my case although iTune Connect was green, when I clicked to open my account, activity spinner kept going forever.
So actually iTune Connect was a problem.
I waited until I could log into my account, tried to upload binary again from Xcode, than above warning disappeared.
It had nothing to do with my Xcode or my account. It was Apple server.