To override the Content-type in your clients, use the HTTP Accept Header, append the .xml suffix or ?format=xml
The following are sample HTTP requests and responses. The placeholders shown need to be replaced with actual values.
POST /xml/oneway/UpdatePrivacyPolicyAcceptDateRequest HTTP/1.1
Host: heidak-api.build.exanic.ch
Accept: application/xml
Content-Type: application/xml
Content-Length: length
<UpdatePrivacyPolicyAcceptDateRequest xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/heilog.ch.Api.ServiceModel.User.PrivacyPolicy" />