Note: Rejected errors are different from error loss due to depleting your monthly quota.
Reasons for error rejections
1. Minimum app version filtering
If you have a minimum app version set, and you send errors that are below that version or have no version set, then they will be rejected. This is helpful if you are only concerned with errors from your application’s latest version.
2. Invalid format
The error notice is rejected if it is sent with incorrect JSON as determined by:
You can view rejected error trends in your project overview graph.
Rejections are less likely with official and widely adopted Airbrake notifiers. However, if errors sent by your Notifier are consistently getting rejected, please help improve the Airbrake notifier you are using by creating a GitHub issue for the notifier and reporting the problem to firstname.lastname@example.org.