Java EE (Java Enterprise Edition) General Discussion

When i use BPWS4J+Tomcat be my workflow engine
then i invoke a external web services deployed on SUNONE AP Server 7
i got the error message

WARNING: CORE3283: stderr: unexpected XML reader state. expected: END but found:
START: {http://hello.org/wsdl/HelloWorld}String_1

is anybody know what is happens
and how can i do to slove this problem

thanks a lot

craig