Use the TryCatch Activity

Note: Use caution when building or editing a workflow. For further advice or to arrange training, contact your professional services consultant.

The TryCatch activity can be used to handle errors when an exception occurs within a workflow.

To add the TryCatch activity to a workflow:

Click the Microsoft Toolbox tab in the Activity section of Workflow Builder.
Select TryCatch from the Error Handling section.
Drag and drop the TryCatch activity into the desired location within the Sequence panel.

This activity contains the following properties:
- DisplayName - the title of the activity
  
  Note: The DisplayName property is set to TryCatch by default.
- Try - the activity that you want to execute when the TryCatch activity is executed
- Catches - the catch element to check if the Try activity throws an exception
- Finally - the activity that you want to execute on completion of the Try and Catches activities
Drag the drop the desired activities into the Try section of the TryCatch activity.
Edit the properties of the included activity accordingly.
Select from the Exception drop-down field. The following exceptions are available:
- System.ArgumentException - alerts you to a problem within an argument
- System.NullReferenceException - occurs when there is an attempt to dereference a null object reference
- System.IO.IOException - alerts you when an I/O (input/output) error occurs
- System.InvalidOperationException - advises of an invalid method call that is not caused by an invalid argument
- System.Exception - the base class for all other exceptions, used to advise of all errors
Alternatively, select Browse for Types to display the Browse and Select a .Net Type window.

Note: Multiple catches can be added to the TryCatch activity.
Select an exception, then click Ok.
Drag the drop the desired activity into the Finally section.
Edit the properties of the included activity as required.
Click Save.