HTTP response code

To: galeon@xxxxxxxxxxxxxxxx
Subject: HTTP response code
From: John Caron <caron@xxxxxxxxxxxxxxxx>
Date: Thu, 30 Jun 2005 11:23:23 -0600

If a server gets a WCS request that generates a Service ExceptionMessage, what should the HTTP response code be? 400 - "Bad Request" ??Is this in the spec somewhere ?