I finally found a solution by exploring this example app: https://iosexample.com/a-demo-app-exploring-the-new-app-intents-framework-in-ios16/. Here is my new (working) implementation of ActivityEntity: struct ActivityEntity: AppEntity { static var typeDisplayRepresentation = TypeDisplayRepresentation(name: "Activity") typealias DefaultQuery = MobilityActivityQuery static var defaultQuery: MobilityActivityQuery = MobilityActivityQuery() var id: String var name: String var displayRepresentation: DisplayRepresentation { DisplayRepresentation(title: "\(self.name)") } }

I found following message in the console: Connection 1: received failure notification. Is there a way to detect this? No delegate method is called, neither in URLSessionTaskDelegate nor in URLSessionDelegate