The WSDL java code is generated with WSDL hardcoded path.
E.g. step\example\flight\wsdl\FlightService.java
If the WSDL is moved from the source location (at code generation time), or if the programs are run on different machines, there are WSDL not found errors.
This behavior is caused by JAX-WS and there is nothing STEP can do to change it.
A possible alternative behavior is to fetch the WSDL using HTTP. In this case, the web application serving the WSDL must be always deployed.