Solved.
I've used @EndpointProperties({@EndpointProperty(key = "set-jaxb-validation-event-handler", value = "false"),}) on all @WebService I wanted to disabled this validation.
As stated in https://docs.jboss.org/author/display/JBWS/JBoss+Modules I needed to "Dependencies: org.jboss.ws.cxf.jbossws-cxf-client services export" to MANIFEST.MF