How to determine logical system in a routine

Hello everybody,
I want to extract data from a ODS-Object (let's say A) to the other ODS-Object (B).
The A-ODS includes data from different R/3-source-system, where I want to select the data from one R/3-source system into B-ODS. Normally I can use the InfoObject 0LOGSYS (which exist as a key-field in A-ODS) with a constant string ofR/3-source system. But the Problem I we have when tranposting to different BW-System.
My question is: how can I determin the BW-System (logical system in a routine, where I can program the coding more flexible? Is there a field for source system similar to sy-datum or is there a function module ?
Thanks so much in advance!
Van Anh

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N Ganesh

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help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFAALEQS/CABFAALEQS.pdf
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How to determine logical system in a routine

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