Error!! Could not deliver the output for Delivery channel:null while while selecting Landscape print

Hi All,

I have added new code to below  xdodelivery.cfg file

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

<config xmlns="http://xmlns.oracle.com/oxp/delivery/config"> 

<servers>

  <server name="ipp_hplj602n" type="ipp_printer" default="true">

   <uri>ipp://localhost:631/printers/TEST</uri>

   <filter>pdf2ps -paper Letter {infile} {outfile}</filter>

  </server>

<!--- new below code is for Pasta driver for Landscape -->

  <server name="ipp_po" type="ipp_printer1" default="true">

   <uri>ipp://localhost:631/printers/TEST1</uri>

   <filter>pdf2ps -paper Letter {infile} {outfile}</filter>

  </server>

</servers>

<properties>

  <property name="ds-temp-dir">/tmp</property>

  <property name="ds-buffering">true</property>

</properties>

</config>