When I try to send Get Request in Postman in the Url 'https://iid.googleapis.com/iid/info/IID_TOKEN', it gives me Internal Server Error.
The IID_TOKEN I get is from FCM (Firebase Cloud Messaging) Server Key. The YOUR_API_KEY I get is from FCM (Firebase Cloud Messaging) Legacy Server Key.
Am I sending the correct IID_TOKEN and YOUR_API_KEY? Or is it any authorization that I have not done?
Please help me on this. Thank you.
How you obtain the IID_TOKEN depends on the client SDK you are using. In the Cloud Messaging Guide, the section for each client SDK (e.g. iOS, Android, Web, etc) has a topic titled Send Your First Message with a step describing how to obtain the registration token. For example, the Android description says to use FirebaseInstanceId.getInstance().getToken().
From your post, it sounds like you are using a server key, which is not correct.
There is an example GET request in the documentation.
