Testrunner issue Unprocessed 'mustUnderstand' header element

Hi,

I am running the tests in batch mode by using the testrunner.bat with following options.
testrunner.bat -e 'http://localhost:9090/XXX/Service' -s 'TestSuite' -u 'abc' -p 'xyz' -w 'Text'-r -I -a -j -f 'C:\Reports' 'C:\Soapui-project.xml

The security header is added in the request and I would want to override the security parameters also the endpoint. I am hitting the fault "<faultstring>Unprocessed 'mustUnderstand' header element...". Any help in resolving this issue?

Thanks,
Vj