Hi Amit,
Thanks a lot for your help, the configuration that you listed are done but still no success on the delta extraction 
Here are couple of questions :
1. Whether we can do delta update for 0FI_GL_4 datasource once per day?
For Example, Today we Initialised the delta in sap ecc and extracted full data to target through informatica. After that we changing few data and inserting few data in datasource. Whether we should be able to do delta update today itself or we need to wait till tomorrow.
2. In BCI MAPPING wizard STEP 3, what steps we need to do for delta initialization and delta update? If possible tel it clearly in detail.
It would be really great if you can please send your contact number and available time to navbms.eee@gmail.com. We will have some small discussion about our queries. Sorry I could not send you a direct message as we are not connected.
Kind Regards,
Naveen