You can define a follow-up action for a task that will automatically be triggered and executed by the system. A follow-up action can call one or more function modules that execute specific functions (for example, printing a shop paper or calling up a transaction).
In Customizing for Cross-Application Components under:
A follow-up function is only executed if the business transaction that is assigned to the follow-up action allows it.
The system automatically executes a follow-up action after you have:
You can display a log on the task detail screen that lists all follow-up actions that were executed.