How to see number of recipients for FCM - android

I make a request to https://fcm.googleapis.com/fcm/send with the following json data:
{
"to": "/topics/push_topic",
"data" : {
"language": "tr,en_us",
"ticker": "...",
"tickerEnglish": "...",
"body": "...",
}
}
The response I receive is the following (The message is sent successfully):
{
"message_id": xxxxxxxxxxxxx
}
But according to the documentation, I am supposed to receive a response like the following:
{
"multicast_id": 216,
"success": 3,
"failure": 3,
"canonical_ids": 1,
"results": [
{ "message_id": "1:0408" },
{ "error": "Unavailable" },
{ "error": "InvalidRegistration" },
{ "message_id": "1:1516" },
{ "message_id": "1:2342", "registration_id": "32" },
{ "error": "NotRegistered"}
]
}
So, why can't I see success and failure variables in my response? Is that because I send the message to a topic?
Thanks.


This is the expected response when sending to a topic.
The sample response with multiple results is for when you are using the registration_ids parameter when sending the message payload.

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