Each Web service method that returns Repo2Xml items has an additional method with an optional String argument for a mapping file name. For example, the getProfile() method has two signatures: getProfile(String pProfileId), and getProfile(String pProfileId, String pMappingFile). However, only the former is generated by default. If you want to use the second String and apply a mapping file, you must configure an ItemDescriptorMapping as described in the Web Services Guide. In addition, ensure that the useDefaultMappings property is set to true for the component that the Web service calls.