20404: Not Found

This error occurs when you request a resource that Twilio cannot find. Common reasons include using an incorrect or deleted SID, sending a malformed request path, using the wrong resource name or casing, or sending the request to the wrong product base URL.

• The SID in the request does not exist, or the resource existed previously and has since been deleted.
• A Verify Verification SID was approved or expired and then soft deleted. After that happens, requests to that Verification resource return 20404.
• The request path points to a resource that does not exist, such as using TwilioCalls instead of Calls, or the path uses the wrong casing.
• A required SID is missing or empty in the request path, which produces a malformed URL.
• The request was sent to the wrong host or base URL for the product you are calling. Core REST API resources use https://api.twilio.com/2010-04-01. Verify uses https://verify.twilio.com/v2/.
• You requested /Numbers/AvailableNumbers or another incorrect path for the Available Phone Numbers API. The correct resource path includes the country code and number type.

• Use the exact SID returned by the resource create or list response, and send the request to the documented endpoint for that resource. For example, Call resources use /Accounts/{AccountSid}/Calls/{Sid}.json, and Verify fetches use /Services/{ServiceSid}/Verifications/{Sid}.
• For Verify, do not fetch a Verification resource after it has been approved or expired. Use the Verification Check endpoint to validate the code, or start a new verification if you need a new verification attempt.
• Match the resource name and path casing exactly as documented. Use Calls, not TwilioCalls or calls.
• Validate every path value before sending the request. Ensure AccountSid, ServiceSid, CallSid, and VerificationSid values are present and non-empty.
• Use the correct product host and base URL for the endpoint you are calling. Do not send core REST API requests to https://twilio.com or https://www.twilio.com.
• To search for available phone numbers, use /AvailablePhoneNumbers/{CountryCode}/{Type}.json (for example, /AvailablePhoneNumbers/US/Local.json). See the AvailablePhoneNumber resource for the full endpoint reference.

• Twilio API overview
• Verify API
• Call resource