60251: Invalid Templates parameter

The Templates parameter in your request to create a verification is not structurally valid. Twilio rejected the request before attempting to resolve any template.

Templates is a JSON-encoded array of template configurations, sent as a string because the Verify API uses application/x-www-form-urlencoded. Each entry requires a sid and may include an optional substitutions object.

HTTP status: 400

• The Templates value is not valid JSON, or is valid JSON but not an array.
• An entry in the array is missing the required sid field.
• A sid value is not a valid template SID. Template SIDs start with HJ followed by 32 hexadecimal digits.
• An entry's substitutions value is not an object of key-value pairs.
• The array contains more than the maximum number of entries allowed.

• JSON-encode the Templates value as an array before URL-encoding it into the request body.
• Give every entry a sid, and copy each SID directly from the Twilio Console or from a Templates API response rather than typing it by hand.
• Send substitutions as an object, for example {"sid": "HJ...", "substitutions": {"title": "Sign in"}}.
• Reduce the number of entries so the list stays within the allowed maximum.
• Validate the Templates payload in your application before calling the Verify API.

• Template was not found
• Missing substitutions for selected template
• The selected channel for template is not supported

• Start New Verification
• Verify Templates API
• Getting Started with Verification Templates