First time playing with the APIs.

Trying to create a 50MB AWS DirectConnect from my existing ECX ports in London.  I know I have the correct parameters in place (or so I think) as I have copied them from a connection that I have manually done via the ECX portal.

But when using the API, I get this following error:

   {
        "errorCode": "IC-LAYER2-500",
        "errorMessage": "System is unable to process the request at this time due to some internal error.",
        "moreInfo": " Please contact support@equinix.com for more info",
        "property": ""
    }

And there is nothing in the KB to refer to IC-LAYER2-500 to give me a clue.  Now a error 500 seems to be a fault at the ECX API side, however, as this is my first attempt at using the API, unsure if I am doing something wrong!

Anyone any ideas??