Taoufik Gharbi [https://community.jboss.org/people/gtn66] created the discussion "Re: Task cannot have more than one incoming connection?" To view the discussion, visit: https://community.jboss.org/message/791943#791943 -------------------------------------------------------------- Now I have solved the problem with java.lang.NullPointerException happened in at org.jbpm.ruleflow.core.validation.RuleFlowProcessValidator.validateNodes(RuleFlowProcessValidator.java:193) Diverging gateways should have constraints. For further information see the following  documentation (chapter 6.8.2 constraints) http://docs.jboss.org/jbpm/v5.4/userguide/ch.core-basics.html#d0e2175 -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/791943#791943] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]