Notification Service Extension Not working

Does your aps payload include

Code Block 
 "mutable-content": 1

which is required to trigger the service extension

Hi Gualtier Malde,

Thank for your reply, much appreciated.

Yes, the payload contains "mutable-content": 1 and an attachment URL.

The payload also needs to include an alert dictionary with title, subtitle, or body. So I think if you have mutable-content, but are missing those, the NSE still won't be triggered

Thanks charliecruzan.

The payload looks good when arrived, meeting the compliance.I have attached the same for your reference, please have a look.
Note - I have removed value of the attachment url key as it shows error when pasting here (but that is valid url which contains asset)
fyi - Gualtier Malde

 [AnyHashable("aps"):
{  MobileMessage =  
{    actions =    (          
  {        background =        {      
    border = 1;         
  borderColor = "#000000";       
    color = "#ED2B09";       
 };       
 cornerRadius = 5;        
event = notificationOpened;        
font =        {          
color = "#F8F9FA";          
size = 12;         
 style = normal;  
      };  
      label = Usage;        link = "usage";      
}   
 );   
 constrainWidths = 1;   
 content =    {     
 background =      {      
  border = 0;      
  borderColor = "#000000";       
 color = "#FFFFFF";      };     
 body = "Sample In-App Message";     
 bodyFont =      {       
 color = "#000000";        
size = 12;        
style = normal;    
  };     
 graphic = "";     
 graphicBorder =    
  {        
border = 0;        
borderColor = "#000000";     
 };  
    title = Vodafone;   
   titleFont =     
 {       
 color = "#000000";       
 size = 14;      
 style = bold;    
  };   
 };   
 creativeId = "9de6da5b-e7d2-4502-9687-210be313e281";    
dismissEvent = messageDismiss;  
  eventId = "de1a23aa-539f-4b54-ad4d-fe28cd644494";  
  taskId = "16f9d1a6-f2de-4725-89a0-fd672f743311";  
  template = "creative.mobileInAppMessage.large";  
};  
alert = 
 {  
  body = "Sample In-App Message";   
 title = Vodafone;  };  
category = SASCollector;  
"mutable-content" = 1;
  sound = default;
},
AnyHashable("data"):
{  "attachment-url" = "";
}
]

My basic issue was that the thumbnail image was not shown in the Push Notification when it was received. I resolved it by applying the following steps: TARGETS (main) -> Build Phases -> Embed App Extensions -> Uncheck "Copy only when installing"

My basic issue was that the target iOS version of the newly created extension was higher than the iOS version on the test device. The target iOS version of the extension does not depend on the target iOS version of the app. Project -> Targets -> your_extension -> General (tab) -> Deployment Info

Hello, @PrithiviApple

try using the real device, that works for me.

My issue was my Project "iOS Deployment Target" value was different than my main application target and Notification Service Extension.

My main application target and Notification Service Extension had the same "Deployment Info" version but that didn't match the Project

The APS payload must contains "mutable-content": 1 to trigger the extension.

In my case the solution was to uncheck "Copy only when installing" in the Embed Foundation Extensions inside Build Phases

Silent notification do not work me on ioS 17 when a real device in any confifuration : application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) this is not being called even in foreground. The minute the aps is silent i dont get anything

Silent notification does not fire if the payload in push has title and body. if the payload has title and body, notification extension service will fire, if payload does not have, the silent push will fire if in push has key "mutable_content" : true.