i got a select statement in my program as shown below
select * from ce4e001 where bukrs eq s_bukrs-low.
move-corresponding ce4e001 to v_ce4e001.
in this select statement you can see two check statements
where s_kndnr(customer) and s_prctr(profitcenter) are my selection screen fields
can any one tell me what is the exact meaning i mean why they have used those check statements before appending