Home/ Questions/Q 8332163
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-09T02:38:43+00:00

I don’t understand something in JBPM API. I have two users on a task

  • 0

I don’t understand something in JBPM API. I have two users on a task at the same time. The first one chooses a transition and completes the task, so the TaskInstance is now ended. The second user does the same but gets a nullPointerException : getAvalaibleTransition() returns null.

Why would getAvailableTransition() (of class TaskInstance) return null ? It’s the same node, transitions should be the same ?

I am a total newbie with JBPM. Just testing the behaviour of an application in response to competitive actions and ran into this error…

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I suppose that you are using jBPM 3.x right?
    If you have one single instance of a business process, why do you have two users in one task? You are probably missing the idea of Process Instance, so can you describe your business situation? Because if one user complete a task, then that task can not be worked by another user.
    Cheers

    • 0