My Response : <s:Body><GetMyDataResponse xmlns="http://tempuri.org/"><GetMyDataResult xmlns:a="http://schemas.datacontract.org/2004/07/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><a:ID>1</a:ID><a:Name>Pratik</a:Name></GetMyDataResult></GetMyDataResponse></s:Body>Client Expectation:<s:Body><GetMyDataResponse xmlns="http://tempuri.org/"><GetMyDataResult><![CDATA[<Abc><xs:schema id="Abc" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata"><xs:element name="Abc" msdata:IsDataSet="true" msdata:UseCurrentLocale="true"><xs:complexType><xs:choice minOccurs="0" maxOccurs="unbounded"><xs:element name="Demo"><xs:complexType><xs:attribute name="ID" type="xs:int" /><xs:attribute name="Name" type="xs:string" /> </xs:complexType></xs:element></xs:choice></xs:complexType></xs:element></xs:schema><Demo ID="1" Name="Pratik" /></Abc></GetMyDataResult></GetMyDataResponse></s:Body>