title: SOAP and HTTP response codes
body: <p>Is SOAP end-point over HTTP expected to return any status code except 200 and 500? I have a SOAP end-point that has some business logic to reject requests when there are too many of them. I wonder what is the correct HTTP response code in this case - 500 or 429? The <a href="https://www.w3.org/TR/2000/NOTE-SOAP-20000508/#_Toc478383529" rel="noreferrer">SOAP specification</a> seems vague to me:</p>
  
  <blockquote>
    <p>SOAP HTTP follows the semantics of the HTTP Status codes for
    communicating status information in HTTP. For example, a 2xx status
    code indicates that the client's request including the SOAP component
    was successfully received, understood, and accepted etc.</p>
    
    <p>In case of a SOAP error while processing the request, the SOAP HTTP
    server MUST issue an HTTP 500 "Internal Server Error" response and
    include a SOAP message in the response containing a SOAP Fault element
    (see section 4.4) indicating the SOAP processing error.</p>
  </blockquote>