Xcode 11.7, Xcode 12 beta 6 and Xcode 12 GM seed. Devs should never use any beta OS/SDK/tool for submittal to the store, ever, so b6 is out. 12 GM might fail right now if the backend hasn't been changed to accept it, and that is a distinct possibility, at least for the moment. Xcode 11.7 should work regardless. My guess is this isn't just about Xcode, but that you've also included a beta SDK, and/or built while on a beta macOS. As well, once an project has been touched by a beta Xcode, there may be traces left if you switch to a release Xcode, such as 11.7, where the store sniffs out those traces and rejects as above. Be sure when moving to release tools to 'clean-build-folder' on the project. I have to publish this app as soon as possible I assume you're targeting iOS 14.x (except that Xcode 11.x would not know about it...) - you might stick with iOS 14 GM, and Xcode 12 GM, but again, it is common that the last part of the puzzle is resetting the flag on the backend that says those versions