XMLAdapter http GET

Hi

I’m trying to do a http get operation with a XML string. We get an error that says the following:

** ERROR: HTML Processing Error [java.io.FileNotFoundException: http://10.11.14.26/eai/start.swe?SWEExtSource=wf&SWEExtCmd=;=Execute&UserName=S;SADMIN&Password=S;SADMIN&SWEExtData;a=<?xml version="1.0" encoding="UTF-8"?>

G0001 Mr. Verellen etc......

Does anyone knwow why we get this error. When I post the string (http://etc) in a browser it works just fine.

thanks
Jeroen