Transaction MC47,MC48 and MC50

Hi All

I have a requirement to take values for few fields from the output of the transactions MC47,MC48 nd MC50 in R/3 and bring that data into BW.

I do think there is any standard datasources that would give me the desired result from MC47,48 and 50.If anybody knows about it please let me know.

In order to find out the underlying tables i will have to somehow manage to debug the transactions which as you all would agree is a harrowing task which might or might not give me any clue.

in such a given situation i would need all you'r expert advise

Thanks

JP