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Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that allows you to reliably send messages at no cost. It is used to send notifications and data messages to client apps, enabling real-time communication between servers and client devices.
When using FCM, you might encounter an error message stating InvalidPriority
. This error typically occurs when attempting to send a message with an incorrect priority level.
Developers may notice that messages are not being delivered as expected, and upon checking the logs, the InvalidPriority
error is displayed.
The InvalidPriority
error arises when the priority of a message is set to a value that is not recognized by FCM. FCM supports two priority levels: normal
and high
. Any deviation from these values will result in this error.
Setting the correct priority is crucial as it determines the delivery speed and conditions under which the message is sent. For more information on message priorities, refer to the Firebase documentation.
To fix the InvalidPriority
error, follow these steps:
{
"to": "/topics/news",
"priority": "urgent",
"notification": {
"title": "Breaking News",
"body": "Stay tuned for more updates."
}
}
normal
or high
. For example:{
"to": "/topics/news",
"priority": "high",
"notification": {
"title": "Breaking News",
"body": "Stay tuned for more updates."
}
}
By ensuring that the message priority is set to a valid value, you can avoid the InvalidPriority
error and ensure that your messages are delivered as intended. For further reading, check out the Firebase Cloud Messaging guide.
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