Industrial fault description: Nothing is returned upon workflow data request. The JBoss startup classpath parameter does not include the right DB2 jar package. TrainTicket replicated fault description: Many microservices share a same lib. This lib contains some basic data structure such as Enum of Order status. The value of same order status in different version is in different value. If some microservice use an old version lib but some use a new version lib, the fault will occur.