Push Notifications can fail for various reasons- the token might have expired or the push message may have been too large for the Push service to process, and so on. Here are the most frequently occurring errors and their reasons.
Error or Alternative Error | Description |
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Unregistered Also known as:
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An existing registration token may cease to be valid in several scenarios, including:
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Sender temporarily Also known as:
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Either the Sender server experienced an internal error while trying to process the request, or it is temporarily unavailable. |
Authorization Error Also known as:
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The Authentication Key for APNS or Web Push is invalid/expired. Please check your push Authorization setup. |
Invalid Vapid Details |
Vapid keys generated for Web push are wrong/invalid. Please check Web SDK integration or raise support ticket. |