title: Twilio Channel - SMS 60200 Invalid parameter error (400 bad request)
body: <p>I'm getting a &quot;400 - Bad Request&quot; error with Twilio API, but couldn't find the reason.</p>
  <p>Here's my request:</p>
  <pre><code>curl --location --request POST 'https://verify.twilio.com/v2/Services/xxxxxxxxxxxxxx/Verifications' \
  --header 'Authorization: Basic xxxxxxxxx' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data-urlencode 'Channel=sms' \
  --data-urlencode 'To=+44xxxxxxxxxx'
  </code></pre>
  <p>I'm getting the response:</p>
  <pre class="lang-json prettyprint-override"><code>{
      &quot;code&quot;: 60200,
      &quot;message&quot;: &quot;Invalid parameter&quot;,
      &quot;more_info&quot;: &quot;https://www.twilio.com/docs/errors/60200&quot;,
      &quot;status&quot;: 400
  }
  </code></pre>
  <p>The response includes a <code>RequestID</code> header, but in the Twilio portal there is no way to lookup errors by <code>RequestID</code>.</p>