I am trying to create a new playlist folder in Apple Music using MusicKit on iOS 16. However, I am receiving an Internal Service Error when sending the request. This is the code: let urlString = "https://api.music.apple.com/v1/me/library/playlist-folders" let url = URL(string: urlString)! let body = LibraryPlaylistFolderCreationRequest( attributes: .init( name: "test-playlist-folder"), relationships: .init( parent: .init( data: [.init(id: "playlistsroot", type: "library-playlist-folders")]))) var urlRequest = URLRequest(url: url) urlRequest.httpMethod = "POST" urlRequest.httpBody = try JSONEncoder().encode(body) let request = MusicDataRequest(urlRequest: urlRequest) let response = try await request.response() let responseString = String(data: response.data, encoding: .utf8) print(responseString) When I print the request body using the following code snippet, I get the output as seen below: let jsonBody = try JSONEncoder().encode(body) print(String(data: jsonBody, encoding: .utf8)) Output of the above snippet: Optional("{\"attributes\":{\"name\":\"test-playlist-folder\"},\"relationships\":{\"parent\":{\"data\":[{\"id\":\"playlistsroot\",\"type\":\"library-playlist-folders\"}]}}}") Which should conform to the JSON scheme provided in the docs: https://developer.apple.com/documentation/applemusicapi/libraryplaylistfoldercreationrequest And this is the error output: [DataRequesting] Failed to perform MusicDataRequest.Context( url: "https://api.music.apple.com/v1/me/library/playlist-folders", currentRetryCounts: [.other: 1] ) with MusicDataRequest.Error( status: 500, code: 50000, title: "Internal Service Error", detailText: "", id: "VK23VIZ6AAM5IVP4GIFQ6VXPLU", originalResponse: MusicDataResponse( data: 111 bytes, urlResponse: <NSHTTPURLResponse: 0x000000028042b0c0> ) ). After a lot of trial and error, I don't think I know what the underlying issue is. Is MusicDataRequest not designed to issue POST requests? Is it something else? Kind regards!