Legacy conversion

Question

There is this function module in R/3 which converts legacy vendor # into SAP vendor #. I am loading the purchasing history and I am being provided the legacy vendor # , I need to convert that into SAP # before loading into BW. Otherwise for the legacy vendor# I am seeing the number in text ( when I run a query on this cube).
I am thinking of calling this function module in BW to convert. Please advice if this is the right approach.
Thanks

Answer 1

hi Christina,
since the function module sit in r/3, i do suggest you do the conversion in r/3, in user exit zxrsau01,
say you have table conversion ztblconv,
data : l_tabix like sy-tabix,
       l_s_pur like [purchasing extract structure],
       lt_vendor like ztblconv occurs 0 with header line.
case i_datasource.
when 'purchasing'.
select * from ztblconv into table lt_vendor.
loop c_t_data into l_s_pur.
l_tabix = sy-tabix.
read table lt_vendor with key [vendor] = l_s_pur-[vendor] binary search.
or call function module convert ...
if sy-subrc = 0.
  l_s_pur-[vendor] = lt_vendor-[vendor].
  modify c_t_data from l_s_pur index l_tabix.
endif.
endloop.
hope this helps.