Diagnosis
You have not set the indicator "Update data in source systemimmediately" on the "Update parameters" tabstrip in the Scheduler.

Use
If you select this field, then the data request is evaluated in thesource system straight away and the selected data is sent to BI.
If you remove the selection, you can update the request IDoc manually inthe source system. You also have the option of locating and removingerrors in the data selection with theDebugger.