Pick List 1
Pick List 2

Hi All,
Compare to Pick List 1 and Pick List 2, you can see that the allocated qty showing different. In Pick List 2, the available qty for BAT1-1 still showing 20 instead of 18. May I know is this correct? Will SAP allow user to pick 20 even thought 2 qty already allocate in pick list 1?
I would like to retrieve the available qty in batch number selection screen