Empty
An activity that does nothing when it executes. Occasionally you may need to use an activity that does nothing, for example when a fault needs to be caught and suppressed. You can also use the Empty activity to provide a synchronization point in a flow.
To build an empty activity
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From the palette, drag an Empty activity to the BPEL Editor.
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Choose which activity you want to use to replace the Empty activity. You have four options: Invoke, Assign, Receive, or Reply. These options are available in the Properties view.
More information