Hi,
depends on the requirements.... for just ignoring/removing some lines it will be fine
if you use for exampel a simple mapping ORDERS02 => ORDERS02 and want to filter out some ORDER-Lines based on some criteria...(empty quantity)
Then a simple if statement would be sufficient
(like if the PO1 field "MENGE" is not equal to zero , then create the PO1 target element)
=> this way after the 1:1 mapping....all your PO1-Lines where the "MENGE" is empty are just ignored and you have a new IDoc with just the PO1-segments included that fit your criteria..
Kind Regards
Stefan