I am trying to upload an app to the app store and I am getting this error on the page that has the certs. As far as I can tell I have changed the field so they have matched,
I had this issue with a brand new app, in Xcode 12 beta 3 (app submissions started today).
Xcode had "Automatically manage signing" on. However, the Team ID displayed in the "Signing Certificate" didn't match the Team ID displayed in iTunes Connect website. This was the root cause preventing the app from being uploaded.
How I fixed it: