The Resolution status of the feedback report I made for Apple is now "Potential fix identified - In iOS 15".

I actually see the authentication prompts mentioned by cyclic, just before executing a CloudKit operation on beta 4. When I reject these prompts, I see error message "User rejected a prompt to enter their iCloud account password". When I enter my credentials, I see the error message where this whole thread is about. I'm not sure if it's relevant, but I only see the authentication prompt on devices without two factor authentication, every time when I start a new CloutKit operation. It seems that Apple is experimenting in a very buggy way with new errors messages, while in the meantime we (third party app developers) can't proceed with our normal work.

See also https://developer.apple.com/forums/thread/685918

I'm currently seeing similar errors "Account Temporarily Unavailable" (1028/2011); "Account temporarily unavailable due to bad or missing auth token" in Xcode 13 when running a macOS CloudKit app. This happens on two different Macs with macOS 12 beta 4. CloudKit account is 'available', but all syncing operations fails with this error. The same app downloaded from the Mac App Store runs and syncs without errors. Update: I'm also sometimes seeing this error: "Not Authenticated" (2011); "User rejected a prompt to enter their iCloud account password".

My CloudKit enabled macOS apps are suffering from exact the same error message when running macOS 12 beta 4. This happens on 2 different Macs running the same beta. As if developing for Apple is not already challenging enough.

I solved this UUID related crash by extending the sorting key path with ".description" (instead of the earlier suggested but still crashing ".uuidString"): NSSortDescriptor(key: "id.description", ascending: true)

I see the same message, and I'm already in the program. Very confusing indeed.

The DTK is still useful for installing macOS betas, like macOS 11.1.

I my case, it turned out that the minimum version of the Intent Handler target was set to iOS 14.1 by Xcode, while the rest of the project was set to iOS 14.0. After adjusting this, I could run the dynamic configuration panel for the Widget without the "No options were provided for this parameter" error message when testing on iOS 14.0.

My current WidgetKit test project gives exactly this error in iOS 14.0.1, but works in iOS 14.1. Unfortunately the minimum version of my app is iOS 13, so I'm still searching for a solution to make it work in iOS 14.0.1