When the target 2.1 is defined , the jbossws consumer tool will add the "-frontend jaxws21" to the CXF wsdl2java tool . This doesn't work in CXF because of the JAXB 3.x upgrade in CXF. This is old thing to support, now all the code generation are default to generate jaxws22 compliant code.  This will be removed in the CXF and hence we should remove this in jbossws tool too.