I am creating in the application support for the Unwanted Communication Reporting extension. All I found is this guide from Apple: https://developer.apple.com/documentation/sms_and_call_reporting/sms_and_call_spam_reporting and i follow it. I've done: Instantiates my ViewController from ILClassificationUIExtensionViewController. Calls controller’s prepare(for:) method to customize UI. Create button to notify the system when you have completed gathering information (setting setting isReadyForClassificationResponse property to true.) Configure classificationResponse(for:) method after pressing Done button. I want to send a response over the network so I add an associated domain to extension by following this instruction: https://developer.apple.com/documentation/xcode/supporting-associated-domain and advises from interenet.  Create file apple-app-site-association, use classificationreport instead of webcredentials when specifying the domains. {  "applinks": {   "apps": [],   "details": [    {     "appID": “XXXX.com.project.UnwantedCommunicationExtension",     "paths": ["*"]    }   ]  },  "classificationreport": {    "apps": ["XXXX.com.project.UnwantedCommunicationExtension"]   } } Add domain to the entitlement: Specify the network endpoint’s address using the ILClassificationExtensionNetworkReportDestination key in extension’s Info.plist file: Create test server and sent the apple-app-site-association file to this server.  Debugging and proxying my app, it doesn’t send any requests to the server. I can’t find any information about what request type should be sent, what data type will the server receive. Can anyone help to find information about it? Maybe advice what I did wrong, what settings should be on the server?