When ticket generation fails in the CAS login flow, a FlowExecutionException is raised due to a missing ticketCreationError transition:
2015-03-19 09:08:19,090 - ERROR [org.springframework.webflow.execution.FlowExecutionException:76] -
org.springframework.webflow.execution.FlowExecutionException: Exception thrown in state 'grantServiceTicket' of flow 'cas/login'
at org.springframework.webflow.engine.impl.FlowExecutionImpl.wrap(FlowExecutionImpl.java:573)
Caused by: java.lang.IllegalArgumentException: Cannot find state with id 'ticketCreationError' in flow 'cas/login' – Known state ids are 'array<String>['initializeLogin', 'checkAuthenticationRequired', 'buildAuthenticationContext', 'authenticate', 'grantServiceTicket', 'redirectToService', 'gatewayRedirect', 'error']'