The On Open action is an activity callback action that allows you to design business rules to validate whether an instance of a process activity (in the process flow) can be opened by the end-user, that is to say, whether the activity can be executed by the end-user. An On Open action can have local variables.

If you want to stop the end-user from opening a task in the Taskbox, raise an exception using the Raise Error element. This will prevent the process activity from moving to the open state and will keep it in its current state. Learn more about how to Explicitly Raise an Exception.

Input parameters

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Output parameters

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See Also

Process Activities Callback Actions | Process Activities Life Cycle | Process Callback Actions | Explicitly Raise an Exception | Designing Actions | Designing Processes | Process Flow Toolbox