I am trying to post an addReportRequest on the the Marketing API (v7). Returns error E0152 - wrong namespace for service. Am using the sandbox - https://sandbox.marketing.ews.yahooapis/services/v7. Cannot work out whether I am using the wrong namespace for the sandbox - cannot see anything that says what it should be so am using same as live which is "http://marketing.ews.yahooapis.com/v7" or if I am setting up the SOAP request incorrectly. Any help would be very welcome.