Thanks for your answer Colm.
In fact, I know that in BW datasource:
ABR means After before and Reverse image so in your next target, you will receive rows flagged by 0RECORMODE values : X, NULL, R
You can have other types of delta like ADD: Additive image, so you will receive rows flagged by 0RECORDMODE values : A
I found these explanations there: http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/5080c337-81e5-2c10-97af-8929424f3a4b?overridelayout=t…
I would like to know for my Openhub flow which kind of delta (and so which kind of rows) I will receive. Because I already saw that from an ECC data source which is in a AIE delta process for example, it seems that I have a different delta process in Openhub above when I have to treat delta in BODS.