How Do I Resolve an 'Unknown Host' Error?

If you're not able to invoke a REST service URL from Visual Builder in your network because of an Unknown host error, you'll need to make sure that the REST endpoint is publicly accessible.

Here's an example of an Unknown host error:

{    "type":
      "HTTP://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.1",
      "status": 400,
      "title": "Bad Request",
      "detail":
      "{\"type\":\"abcs://proxy_auth_problem/unknown_host\",\"title\":\"Unknown
      Host\",\"detail\":\"Authentication server xxx: Name or service not known is
      unknown\",\"status\":400}"
}

Try pinging the domain listed in the endpoint URL. If you continue to get the Unknown host error, take steps to expose the endpoint to the public internet, so Visual Builder can invoke the service.