Menu

Rate this page:

Thanks for rating this page!

We are always striving to improve our documentation quality, and your feedback is valuable to us. How could this documentation serve you better?

Error 12200

Warning - 12200

Schema validation warning

The provided XML does not conform to the Twilio Markup XML schema. Please refer to the specific error and correct the problem.

Possible Causes

  • misspelled verbs
  • incorrect case for verbs; TwiML is case-sensitive, so <Say> works, but <say> will not
  • misspelled or unknown attributes
  • unknown or unexpected nested elements.

Possible Solutions

  • check the line and column reported by the warning to see what part of your XML response caused the complaint
  • verify that your application server is accepting and properly responding to any custom parameters you may be passing