Getting a specific push token receipt for messages sent to multiple tokens

How to / Third Party Tooling
1

SDK Version: 41
Platforms: all

Hey everybody,

I’m using expo-server-sdk-node to send push notifications.

I know that if I send multiple push messages each with one recipient token, I’ll get a response with a single status object for each of them in order they were sent (as has been brought up in this thread).

So for example if I send these push messages to the Expo Notifications API:

[
  {
    "to": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]",
    "body": "Hello world!"
  },
  {
    "to": "ExponentPushToken[yyyyyyyyyyyyyyyyyyyyyy]",
    "body": "You've got mail"
  }
]

I can potentially get a response like this if the token in the second message is bad:

{
  "data": [
    {
      "status": "ok",
      "id": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
    },
    {
      "status": "error",
      "id": "YYYYYYYY-YYYY-YYYY-YYYY-YYYYYYYYYYYY",
      "message": "The recipient device is not registered with FCM.",
      "details": {
        "error": "DeviceNotRegistered",
        "fault": "developer"
      }
    }
  ]
}

That’s fine and I can tell that I should stop sending notifications to the ExponentPushToken[yyyyyyyyyyyyyyyyyyyyyy] push token.

Now if I send a push message addressed to multiple push tokens, I’ll still get a single status object in response.

E.g. when I send these messages:

[
  {
    "to": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]",
    "body": "Hello world!"
  },
  {
    "to": [
      "ExponentPushToken[yyyyyyyyyyyyyyyyyyyyyy]",
      "ExponentPushToken[zzzzzzzzzzzzzzzzzzzzzz]",
      "ExponentPushToken[aaaaaaaaaaaaaaaaaaaaaa]"
    ],
    "body": "You've got mail"
  }
]

I can still get a response like this if just one of the three tokens in the second message is bad:

{
  "data": [
    {
      "status": "ok",
      "id": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
    },
    {
      "status": "error",
      "id": "YYYYYYYY-YYYY-YYYY-YYYY-YYYYYYYYYYYY",
      "message": "The recipient device is not registered with FCM.",
      "details": {
        "error": "DeviceNotRegistered",
        "fault": "developer"
      }
    }
  ]
}

My question is, how can I tell, in this case, which tokens in the second message are bad? Should I just stop addressing push messages to multiple tokens and always send them one-by-one?

Thanks a lot and keep up the good work! :pray:

2

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