Send Username and Email in XML

        <xs:element name="user">
            <xs:complexType>
                <xs:sequence>
                    <xs:element name="username" type="xs:string"/>
                    <xs:element name="email">
                        <xs:simpleType>
                            <xs:restriction base="xs:string">
                                <!-- Add a pattern for email validation -->
                                <xs:pattern value="[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}"/>
                            </xs:restriction>
                        </xs:simpleType>
                    </xs:element>
                </xs:sequence>
            </xs:complexType>
        </xs:element>