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May 13, 2008 at 06:29 PM

Need some basic info on FM Extractors

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Hi guys

i am new to developing function Module Extractors and i was going through the sample on Help.sap.com(RSAX_BIW_GET_DATA_SIMPLE). Can some one ans some of my questions...

1- what is I_T_SELECT, I_T_FIELDS and E_T_DATA. i understand these r internal tables but what info resides in what table. Say I have defined a structure Z_bw_test_struct and it has fields from 2 tables with no common fields. now relate this scenario to these internal tables.

2- in the same scenario above what is Ranages statement for in sample FM on help.sap.

Thanks!