if you want to sort vbfa by vbfa-vbeln take two fields to internal table and sort by vebln,if you want to delete duplicate values rfwrt use,
DELETE ADJACENT DUPLICATES FROM it_vbfa COMPARING rfwrt .
if you want to sort vbfa by vbfa-vbeln take two fields to internal table and sort by vebln,if you want to delete duplicate values rfwrt use,
DELETE ADJACENT DUPLICATES FROM it_vbfa COMPARING rfwrt .