Replace: @Persistent with: @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Otherwise provide some code how you call the method public void saveUser(User user) (I'm guessing that this method throws exception). particulary how the 'user' parameter is created. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---