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52118: FCM Bad Request

ERROR: 52118

NOTIFY

ERROR

Description

FCM Bad Request

Possible Causes

Invalid or missing registration token.
Incorrectly formatted JSON payload.
Invalid or missing required fields in the request.
Exceeding the payload size limit.
Invalid API key or authentication token.

Possible Solutions

Verify that the registration token is correct and not expired.
Ensure the JSON payload is correctly formatted and adheres to FCM specifications.
Check that all required fields are included and correctly populated in the request.
Ensure the payload size does not exceed the maximum limit allowed by FCM.
Verify the API key or authentication token is valid and has the necessary permissions.