<route>
   <from uri="...">
   <to uri="...">
   <to uri="...">
 </route>

.setHeader("ID", XPathBuilder.xpath("/order/@id", String.class))
.setProperty("ID", XPathBuilder.xpath("/order/@id", String.class))

String propId = (String) exchange.getProperty("ID");
String headerId = (String) exchange.getIn().getHeader("ID");                        }

<setHeader headerName="token">
    <constant>someValue</constant>
</setHeader>

<setHeader headerName="userName">
    <simple>${properties:userName}</simple>  //from config
</setHeader>

<setProperty propertyName="bodyBkp">
    <simple>${in.body}</simple>
</setProperty>

<setProperty propertyName="orderNumber">
    <xpath resultType="String">//item[1]/orderNumber/text()</xpath>
</setProperty>

${exchangeProperty[orderNumber]}

${in.headers.token}