Error!! Could not deliver the output for Delivery channel:null in 11i

Hi All,

<?xml version="1.0" encoding="UTF-8"?>

BCF

<?xml version="1.0" encoding="UTF-8"?>

<xapi:requestset xmlns:xapi="http://xmlns.oracle.com/oxp/xapi" type="Bursting">

<xapi:request select="/XXOEXOEACK/LIST_G_ORDERS/G_ORDERS">

<xapi:delivery>

<xapi:email id="123" server="smtp_server.test.com" port="25" from="wf_mailer_test_address" reply-to ="">

<xapi:message id="123" to="${CF_SALES_REP_EMAIL}" attachment="true" subject="This is for sample from Dev">

Hi, Please find the Details file.

</xapi:message>

</xapi:email>

</xapi:delivery>

<xapi:document output-type="pdf" output="C_${LINE_ID}" delivery="123">

<xapi:template type="rtf" location="xdo://XXCASTLE.XXOEXOEACKXML.en.US/?getSource=true">

</xapi:template>