I have been running into a brick wall with the HTTP Web Request recently. When I test the URL under Edit Web Service I get the expected 400 response. When I actually go to POST though I get a 404 response.

If I post the same exact data and content-type in Advanced Rest Client App for Google Chrome I get a valid JSON response.

I can't understand how I could possibly get a 404 response from a site I know exists and works when using Test URL under Edit Web Service.

Is there anything else I can look at?