CXone Personal Connection API 400 error on outbound call trigger

NICE CXone API & Integrations
1

Just noticed that my C# code fails when trying to trigger an outbound call via the CXone Personal Connection API. I am using the standard HttpClient pattern.

The docs state: “POST /api/v2/connections/outbound to initiate a new outbound connection.” But I get a 400 Bad Request.

  • Endpoint: /api/v2/connections/outbound
  • Method: POST
  • Error: 400

Here is my JSON payload:

{"to": [{"phoneNumber": "+15550199"}], "from": {"phoneNumber": "+15550100"}}

Why does it fail?