Error 40121

Error - 40121

Missing or Invalid 'call_sid' parameter - Redirect Instruction

Possible Causes

  • You did not provide a "call_sid" parameter on your 'redirect' instruction.
  • You provided an invalid value for the "call_sid" parameter.

Possible Solutions

  • Make certain "call_sid" is provided an is a 34char string starting with CA that represents a live call.

Example

{
    "instruction": "redirect",
    "call_sid": "CA0123456789abcdef0123456789abcdef",
    "url": "https://example.com/twiml?querystring=1234"
}

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