White space in XML source code

Plz give your code sett and also try this

use  <cfsetting enablecfoutputonly="true"> at the top of the page

You can use the reset attribute of CFCONTENT to clear any output, such as whitespace, that occurs before the CFCONTENT tag.  See quick sample below.  If this doesn't work for you can you post your code?

<cfsavecontent variable="sampleXml"><?xml version="1.0"?> <!--- no line break or other space between opening cfsavecontent and xml declaration --->
    <people>
        <name>Jon Smith</name>
        <name>Rose Tyler</name>
    </people>
</cfsavecontent>

<!--- use reset attribute of cfcontent to clear output above cfcontent tag, do not include any whitespace between close of cfcontent and start of output --->
<cfcontent type="text/xml" reset="yes" /><cfoutput>#sampleXml#</cfoutput>

What tricks have you tried?

Did you apply these tricks to all the files that might be involvoed in generating the XML file?  Don't forget any Application.cfm|Applicaiton.cfc file that may apply.