Hi!
There is a section in the book "Designing Web Services with the
J2EE Platform" that may be of interest to you, if you have not already seen it:
http://java.sun.com/blueprints/guidelines/designing_webservices/html/integration6.html#1059700
If the above is not applicable, then:
How are you processing the XML from the incoming requests?
If you are receiving valid XML and use some XML processing framework to process the XML, then I do not see why
you should have problems?
Best wishes!