Upload the old and the updated WSDLs to WSDL Diff and see what’s impacted. A WSDL Has Got Updated A vendor has just sent you an updated WSDL. What’s going to break because of the changes in it? This question is very common for any system that is built on top of SOA. You typically have a few consumers for a WSDL, or a few services that use the same WSDL, and now that WSDL needs to be updated.