Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the discussion "Re: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect)" To view the discussion, visit: https://community.jboss.org/message/810601#810601 -------------------------------------------------------------- the situation you described indicates you have two HTWorkitem handlers active which both tries to notify the engine that task was completed. So what I could suggest is: * double check the code you have where you create HTWorkItemHandler and make sure you have just one for given session * if you dispose session make sure that your handler is disconnected otherwise you'll get exceptions as handler will try to notify disposed session HTH -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/810601#810601] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]