I added some fields to '0Material_Attr'.
and I programed the extracting logic in CMOD "EXIT_SAPLRSAP_002".
That added fields can be extracted in tcode "RSA3".
BUT data of the added fields can Not be loaded in PSA of BW system.
Abnormally some of the added fields can be loaded..
I don't know the reason..
InfoPackage, transformation, DTP is all OK..
Help me~~~