Workflow Activities

Last updated May 29, 2025

Error Boundary Event

Error Boundary Events catch exceptions thrown inside a Task or Subprocess, stop the executions inside the Task or Subprocess, and redirects the executions of the process to recovery. From an Error Boundary Event, you can configure to resume the execution, or to end it once the error is fixed. A Task or Subprocess can have none, one, or multiple Error Boundary Events as long as the Exception Type is different from the others.

Important:

You can attach Error Boundary Events to Tasks or Subprocesses exlusively.

Use case

Use the Error Boundary Event activity when you:

Need to catch an error for a single, specific Task.
Have a simple error handling logic that involves one Task.

For example, for a Send Invoice task, the Error Boundary Event:

Catches a failure
Routes the process to either:
- Retry the task, or
- Notify the finance team and continue execution.

Properties

Exception Type: The type of the exception you want to handle with this event.
Display name: The name of the Error Boundary Event point as you want it to be displayed on the Long Running Workflow canvas.

Link properties

Label: The description that is displayed on the canvas element of the link.

Managing the Error Boundary Event

To configure an Error Boundary Event in your process:

Select the Error Boundary Event and attach it to the desired task in your canvas.
Add activities to handle the error and link them to the Error Boundary Event.
For the Exception Type property, select the type of the exception you want to handle.
Optionally, select the canvas element of the error handling path and provide a value to the Label property. This helps you describe the error-handling operation.

On this page

Use case
Properties
Link properties
Managing the Error Boundary Event

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PREVIOUSMessage Intermediate Catch Event

NEXTEnd Event