Invalid Answering Machine Detection Parameters
AsyncAmd, AsyncAmdStatusCallback, and/or AsyncAmdStatusCallbackMethod parameters from POST to /Calls API have been passed in a POST to /Participants API, or added to or TwiML.
Do not include AsyncAmd, AsyncAmdStatusCallback, or AsyncAmdStatusCallbackMethod parameters in POST requests made to /Participants API and in TwiML responses that include or with Answering Machine Detection enabled.