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Twilio is a cloud communications platform that enables developers to build, scale, and operate real-time communications within their software applications. It provides APIs for SMS, voice, video, and other communication channels, allowing seamless integration into applications. Twilio's SMS API is widely used for sending and receiving text messages globally.
When using Twilio's SMS API, you might encounter an error message labeled as Error 21415. This error indicates that the 'To' phone number provided in your API request is not a valid local number. As a result, the SMS cannot be delivered to the intended recipient.
Error 21415 is a common issue faced by developers using Twilio's SMS API. It occurs when the phone number format does not comply with the expected local or international standards. This can happen due to incorrect formatting, missing country codes, or invalid number lengths.
To resolve Error 21415, follow these actionable steps:
Ensure that the phone number is formatted correctly. Use the E.164 format, which includes the country code followed by the national number. For example, a US number should be formatted as +12345678900.
Make sure the phone number includes the correct country code. You can refer to Twilio's E.164 documentation for more information on international phone number formatting.
Verify that the phone number length is appropriate for the country. Different countries have different standard lengths for phone numbers. You can use Twilio's Lookup API to validate the phone number.
For further assistance, consider exploring the following resources:
By following these steps, you can effectively resolve Error 21415 and ensure successful SMS delivery using Twilio's API.
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