iOS, OS X, Safari errors

Descriptions and solutions to common errors that may occur on iOS, OS X, and Safari platforms

Error	Description	What to do
BadCertificate	The APNS certificate for this application is invalid.	Create a valid certificate using this guide and check that the platform is configured correctly.
BadDeviceToken	The specified device token is invalid. Therefore, the device will be unsubscribed from notifications.	Verify that the request contains a valid token and that the token matches the environment.
DeviceTokenNotForTopic	The specified token is unsuitable for sending notifications to the specified topic (package name specified when creating the iOS app). The device will be unsubscribed from notifications.	Use the token that is suitable for sending notifications to this topic.
ExpiredCertificate	The APNS certificate for this application has expired.	Create a valid certificate using this guide and check that the platform is configured correctly.
FrequencyCapping	The device was filtered by Frequency Capping.	If such behavior was not intended, check the Frequency Capping settings.
InvalidCertificate	The APNS certificate for this application is invalid.	Create a valid certificate using this guide and check that the platform is configured correctly.
InvalidProviderToken	The specified token is invalid or signed with an invalid certificate. Notifications will no longer be sent to the platform where this error occurred.	Check that the platform is configured correctly.
InvalidToken	The specified token is invalid. Notifications will no longer be sent to the platform where this error occurred.	Check that the platform is configured correctly. This error usually points to the mismatch between gateways (for example, if you're sending pushes to your development/sandbox build through the production gateway or vice versa). Also, some of your users may have another build installed on their devices.
MissingDeviceToken	The device token isn’t specified in the request.	Verify that the header contains the device token.
PayloadIsTooLarge	The message size exceeds 4096 bytes.	Reduce the message size.
RevokedCertificate	The APNS certificate for this application has been revoked via the Apple Developer admin panel. Push notifications will be disabled for this platform.	Renew your certificate using this guide.
SandboxSendingError	Failed to send message to the sandbox APNS environment.	Try sending the message again later.
TimeoutExceeded	Multiple attempts to send a message to the device within 1 hour were unsuccessful, as the APNS server did not respond.	Try sending the message again later.
Unregistered	The token is no longer valid. The device will be unsubscribed from notifications.	Use a new token.