With a certain project in Xcode 9 beta 6 when I try to Upload to the App Store I get:
I am the \"Admin\" role for this account.
Edit: This worked for me in Xcode 9 GM. I don't know if it will be an issue in the final version
What worked for me is that I changed my regular AppleID email, with the equivalent @icloud.com alias.
For example, I didn't use myemail@gmail.com, I used myemail@icloud.com and it worked.
(Which I really don't prefer, I prefer using my personal email, but if it works, it works)