Debug Your Infrastructure

Get Instant Solutions for Kubernetes, Databases, Docker and more

AWS CloudWatch
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing

Twilio Error 21413

The 'To' phone number is not a valid short code.

Understanding Twilio: A Powerful SMS Communication API

Twilio is a cloud communications platform that enables developers to programmatically send and receive SMS, make and receive phone calls, and perform other communication functions using its web service APIs. It is widely used in applications to facilitate seamless communication with users.

Identifying the Symptom: Error 21413

When using Twilio's SMS API, you might encounter the error code 21413. This error indicates that the 'To' phone number provided in your API request is not a valid short code. Short codes are special telephone numbers, typically shorter than regular phone numbers, used to send SMS and MMS messages.

Exploring the Issue: What Causes Error 21413?

Error 21413 occurs when the recipient's phone number in your API request is not formatted as a valid short code. This can happen if the number is incorrectly entered or if a regular phone number is mistakenly used in place of a short code.

Common Mistakes Leading to Error 21413

  • Entering a regular phone number instead of a short code.
  • Incorrectly formatting the short code.
  • Using a short code that is not provisioned for your Twilio account.

Steps to Resolve Error 21413

To resolve this error, follow these steps:

Step 1: Verify the Short Code

Ensure that the 'To' number in your API request is a valid short code. You can check the validity of a short code by consulting the Twilio Short Codes Documentation.

Step 2: Check Your Twilio Account

Make sure that the short code is provisioned and active in your Twilio account. You can verify this by logging into your Twilio Console and navigating to the Short Codes section.

Step 3: Correct the API Request

Update your API request to include the correct short code. Here is an example of a properly formatted API request using a short code:

{
"To": "12345",
"From": "+1234567890",
"Body": "Hello, this is a test message."
}

Conclusion

By ensuring that the 'To' number is a valid short code and correctly formatted, you can effectively resolve Error 21413. For further assistance, refer to the Twilio Error Code Documentation for more detailed information on handling errors.

Master 

Twilio Error 21413

 debugging in Minutes

— Grab the Ultimate Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Real-world configs/examples
Handy troubleshooting shortcuts
Your email is safe with us. No spam, ever.

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

🚀 Tired of Noisy Alerts?

Try Doctor Droid — your AI SRE that auto-triages alerts, debugs issues, and finds the root cause for you.

Heading

Your email is safe thing.

Thank you for your Signing Up

Oops! Something went wrong while submitting the form.

MORE ISSUES

Deep Sea Tech Inc. — Made with ❤️ in Bangalore & San Francisco 🏢

Doctor Droid