Go back to previous user task

[guvenc]

This post helped me to achieve this. Process modification works perfectly.

Return the task to previous

Hi Marcelo, yes, you can modify the process instance to move the ‘token’ from one spot in the process to any other spot in the process using Camunda’s REST APIs for process instance modification. For more information have a look at https://docs.camunda.org/manual/latest/reference/rest/process-instance/post-modification/ More information regarding process modification using Java APIs https://docs.camunda.org/manual/latest/user-guide/process-engine/process-instance-modification/ But you should b…

What I did to achieve this is to store the transitionId of the previous userTask in the session, so when the user clicks on the back button, below code runs and it goes back to the previous user task.

You need to find the current activityInstanceId as well, and I assume you already know the process instance id.

String activityInstanceId = null;

ActivityInstance activityInstance = runtimeService.getActivityInstance(processInstanceId);
if(activityInstance != null){
	if(activityInstance.getChildActivityInstances() != null){
		ActivityInstance childActivityInstance= activityInstance.getChildActivityInstances()[0];
		activityInstanceId = childActivityInstance.getId();
	}
};

runtimeService.createProcessInstanceModification(processInstanceId)
					.cancelActivityInstance(activityInstanceId)
					.startTransition(transitionId)
					.execute();