Hello developers ! My team and I are currently trying to migrate to the new Xcode 16 version. We encounter a blocker problem with the new Xcode when submitting a new build on TestFlight. The problem : ITMS-90338: Non-public API usage - The app references non-public selectors in AccorHotelsApp: setSupportedInterfaceOrientations:. We tried several things to solve the issue : remove all the frameworks that are not built by us ; the issue is still present remove the code related to this API in our base code and the frameworks ; the issue is fixed remove only the code related to this API in our base code ; the issue is fixed This indicates that the problem is the code related to this API. The code removed : override public var supportedInterfaceOrientations: UIInterfaceOrientationMask { get { configuration.orientation } set { _ = newValue } } This code is located in our local SPM. It's used to handle orientation of our app depending on specifics configuration given as a parameter. Why Xcode 16 is detecting this API as a private one and consider this as an issue ? Is there a specific configuration we need to do in the local SPM package ? We are investigating on our side if we can find an alternative solution by changing this code, but this does not seem a bad usage as described in Apple documentation. Thank you for your help, Regards. RIVIERE Nicolas