serialVersionUID inside the faults (i.e.: the java exceptions) created by the cxf-codegen-plugin have a value which is equal to yyyyMMddHHmmss of the time when the artifact containing the WSDL is produced. This behaviour cannot be changed currently.
Please refer to: http://old.nabble.com/WSDL2JAVA%3A-generated-serialVersionUID-on-%40WebFault-exceptions-td28526170.html
add a "-useFQCNForFaultSerialVersionUID" flag (true/false) on the WSDL2Java plugin that enables the generation of a serialVersionUID based on the hashcode of the fully qualified class name of the exception(s).