FCM InvalidRegistration error in ios release build

Question

I am a facing a strange issue in ios firebase push notification. I am getting a notification on device whenever I run the app from Xcode or even when I create an archive I am successfully getting notifications.

But when I run a release build on device or upload to app store push notifications are not working for me and I am getting the error below

Certificates for both development and production are uploaded and are valid.

{
    "multicast_id": 6319718121948146737,
    "success": 0,
    "failure": 1,
    "canonical_ids": 0,
    "results": [
        {
            "error": "InvalidRegistration"
        }
    ]
}

second time when I call API with same token then instead of InvalidRegistration I get NotRegistered error

This is how I am generating fcm token

func messaging(_ messaging: Messaging, didRefreshRegistrationToken fcmToken: String) {
        print("Firebase registration token: \(fcmToken)")
    }

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        // Pass device token to auth

        #if DEVELOPMENT
        Auth.auth().setAPNSToken(deviceToken, type: .sandbox)
        Messaging.messaging().setAPNSToken(deviceToken, type: .sandbox)
        #else
        Auth.auth().setAPNSToken(deviceToken, type: .prod)
        Messaging.messaging().setAPNSToken(deviceToken, type: .prod)
        #endif

        Messaging.messaging().apnsToken = deviceToken
        Messaging.messaging().shouldEstablishDirectChannel = true


        //tried this 
        let token = Messaging.messaging().fcmToken
        print("Firebase registration token: \(token)")

        //tried this also both are giving same token but none of them is 
        //working in release build
        let refreshedToken = InstanceID.instanceID().token()
        print("InstanceID token: \(refreshedToken)")


    }

Answer 1

Finally, I solved this issue by removing this part from my code

 #if DEVELOPMENT
 Auth.auth().setAPNSToken(deviceToken, type: .sandbox        
 Messaging.messaging().setAPNSToken(deviceToken, type: .sandbox)
 #else
 Auth.auth().setAPNSToken(deviceToken, type: .prod)
 Messaging.messaging().setAPNSToken(deviceToken, type: .prod)
 #endif