Delta extraction for 0FI_GL_04 for every 30 minutes
In BW, the delta extraction for 0FI_GL_4 from the source system can be loaded as per the processchain or infopackage schedule but where as, from source system will be able to fetch the delta records as per the timestamp defined, or depending on system predefined delta pointer. So even if the data is pulled multiple times Ex:- for every 30 minutes in the same day in the BW system, the deltas will fetch zero records, if the delta pointer is limited to certain period for Ex:- only once a day in the source system.
Check the below link:
Read more at : http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/28006