What is the table rpsco used for? what is the bussiness logic of the following code?
DATA: t_rpsco_mod LIKE rpsco OCCURS 0 WITH HEADER LINE.
SELECT * INTO TABLE t_rpsco_mod
FROM rpsco WHERE ( ( wrttp = '04' AND objnr LIKE 'NV%' AND
( vorga = 'COIN' OR vorga = 'KOAO'
OR vorga = 'KOAL' ) )
OR ( wrttp = '04' AND objnr LIKE 'OR%' AND
( vorga = 'COIN' OR vorga = 'KOAO'
OR vorga = 'KOAL' ) )
OR ( wrttp = '04' AND objnr LIKE 'PR%' AND
( vorga = 'COIN' OR vorga = 'RKL ' ) ) )
AND gjahr IN s_year.