Processing Work Items as a Web Form 
Use
Employees can also display their Business Workplace, with all the work items they have received, on the Internet (SAP Business Workplace Internet application component). While all of the work items displayed can also be executed in the R/3 System, only work items for tasks that fulfill certain technical conditions can be started over the Internet.
Work items for
Web form tasks can always be executed on the Internet.Features

If the work item representing the Web form task is listed in the Web-Workplace, the corresponding Web form can be processed. When the form is transferred to the R/3 System, the work item container of the relevant work item is updated. The work item is then terminated.
If the same work item would be listed in the Business Workplace in the R/3 System, it would be processed with the Web transaction that forms the basis of the Web form.