I have the same problem as this question: https://developer.apple.com/forums/thread/757605 "That indicates you’re using a unique App ID prefix. This is a legacy feature that’s not supported on macOS." Mine is a macOS App distributed in 2021, that now needs an update. It has always been under Xcode automatically managed signing with a Team. (Still have the project files from 2021: automatic) Now validating a new version gives me that error : Invalid Provisioning Profile. The provisioning profile included in the bundle com.*** [***.pkg/Payload/***.app] is invalid. [Invalid 'com.apple.application-identifier' entitlement value.] For more information, visit the macOS Developer Portal. (ID: ***) And even re-validating the old archive from 2021 gives me this error. I have looked at my Apple Id's on "Certificates, Identifiers & Profiles", and I can indeed see that this app has an "App ID Prefix" that is not my Team, but something I don't recognise. I can not make a new App ID Configuration for the bundle id I have been using: "An App ID with Identifier 'com..appname' is not available. Please enter a different string." Removing the existing App ID Config does not work either: The App ID '.com..' appears to be in use by the App Store, so it can not be removed at this time. So, I'm a bit stuck. (Help!)

Developing a macOS app with Xcode 15, macOS 14. As a standalone App, exported from the Organizer/Archive, it behaves normal, and uses ca. 290 MB according to the Activity Monitor, and this remains constant. However, running it in Xcode 15 on macOS 14 in Development, it eats up memory. After 10 minutes it's at 6 GB and going up and up. Running the App under Profiling, with the instruments Allocations and Leaks: normal behaviour and normal memory use. No leaks, no strange allocations detected. What could cause this ridiculous growing memory usage? Where to look? Xcode bug? As I just switched to macOS 14 and Xcode 15 I cannot just go back to old versions.