delivery split - LIKP-ZUKRL in routines

Hi,

What is the logic of the routine DATEN_KOPIEREN_001 and the field LIKP-ZUKRL? I see that if i had an order with 3 positions and if i insert a breakpoint on this routine, enters 4 times. Two times for lips-posnr= 00000 and 1 time for the first position (10) and 1 time for the second position (20).

And how can i change ZUKRL in order to put for example the first two pos. on the same delivery and the 3th pos. on a second delivery?

Thanks.