How to get customer and update them to KNVV from customer mastrer?

Question

Hello Friends,
I have a requirement to check customer and then update them.
I have a customer numbers in my internal table iIT_KUNNR.
I want to check how many customers are from the IT_KUNNR are in the KNA1 and how many are not in kna1.
if some of them are in kna1 then check for how many of them are in KNVV table.
If some of them are in already in KNVV then UPDATE those else INSERT remaining to KNVV.
So, Is there any function modules for these check and get records?
Regards,
RH

Answer 1

hello there ,
try this way
1.loop at it_kunnr into ls_kunnr(header line)
select single kunnr
into kna1-kunnr
from kna1 where
kunnr = ls_kunnr-kunnr.
if sy-subrc = 0.
select single kunnr
from knvv
knvv-kunnr
where  kunnr = ls_kunnr-kunnr.
if sy-subrc = 0.
  update <here>
else.
<insert <here>
endif.
endif.
endloop.
Edited by: BrightSide on Mar 3, 2009 11:20 PM