Getting Unknown ErrorCode in response when sending FCM Notification by using FCM HTTP v1 SDK in C# .NET
I am using FCM HTTP v1 SDK to send Multicast Message as shown below in our C# .NET Application:
The registration token is not a valid FCM registration token (.net)
We are sending the push notifications using Firebase apis. That is getting expired , so we need to upgrade it. We are invoking this from .Net Core 8.0 codebase.
I am trying to use the code step by step provided below. But I am constantly finding this error
https://www.c-sharpcorner.com/article/push-notification-from-c-sharp-net-to-android-using-fcm-http-v1/
“message”: “The registration token is not a valid FCM registration token”,
“status”: “INVALID_ARGUMENT”,