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OneSignal Invalid Time-to-Live (TTL) Value

The TTL value is not within the acceptable range.

Understanding OneSignal: A Push Communication API Provider

OneSignal is a leading push notification service that enables developers to send notifications across various platforms, including mobile and web. It is widely used for engaging users by delivering timely and relevant messages. The service supports a range of features such as segmentation, automation, and analytics, making it a powerful tool for enhancing user engagement.

Identifying the Symptom: Invalid Time-to-Live (TTL) Value

When using OneSignal, you might encounter an error related to an 'Invalid Time-to-Live (TTL) Value'. This issue typically manifests when you attempt to send a notification, and it fails to deliver, often accompanied by an error message indicating that the TTL value is not acceptable.

What is TTL?

TTL, or Time-to-Live, is a parameter that specifies the duration (in seconds) for which a notification should be retained by the push service before it is discarded if not delivered. It is crucial for ensuring timely delivery of notifications.

Exploring the Issue: Invalid TTL Value

The root cause of this issue is usually an incorrect TTL value that falls outside the supported range. OneSignal requires the TTL to be set within a specific range to ensure proper functioning. If the value is too low or too high, the notification may not be processed correctly.

Common Error Messages

  • "Invalid TTL value: must be between 0 and 2419200 seconds."
  • "TTL value out of range."

Steps to Fix the Invalid TTL Value Issue

To resolve the 'Invalid Time-to-Live (TTL) Value' error, follow these steps:

1. Verify the TTL Value

Ensure that the TTL value you are setting is within the acceptable range. OneSignal supports a TTL range from 0 to 2419200 seconds (equivalent to 28 days). Double-check your code or configuration to confirm the value is correct.

2. Update the TTL Value

If the TTL value is incorrect, update it to a valid number within the supported range. For example, if you are using an API call to send notifications, adjust the TTL parameter accordingly:

{
"app_id": "YOUR_APP_ID",
"contents": {"en": "Your message"},
"included_segments": ["All"],
"ttl": 3600 // Set TTL to 1 hour
}

3. Test the Notification

After updating the TTL value, test the notification to ensure it is delivered successfully. You can use OneSignal's notification creation API to send a test message.

Conclusion

By ensuring that the TTL value is set correctly within the supported range, you can prevent the 'Invalid Time-to-Live (TTL) Value' error and ensure your notifications are delivered as expected. For more information on TTL and other parameters, refer to the OneSignal documentation.

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