Integration

Hi I am doing transformation by using bpel transforma activity. the transformed xml is written to a file. but the final xml is putting prefix ns1: to all the elements and the namespace in the top root element. can someone help me how to remove these prefixes?

<request xmlns:ns1="pcbel/fileadapter/...">
<ns1:order>
<ns1:ordernumber>100010</ns1:ordernumber>
</ns1:order>
</request>

the expected result is

<request>
<order>
<ordernumber>100010</ordernumber>
</order>
</request>