1. how do u document abap/4 programs? do u use program documentation/menu option?2.does sap has a gui screen painter? if yes,what operating systems is it available on? what is the other type of screen painter called?3.what is the effect of an include structure statement? what is the difference between a field string and internal table?4. when should u use an include versus a perform versus a function...

Is the program RFBVALL_0 valid for both FedWire and FedACH

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