By looking at your screen and your requirement I see few issue
1) you want system not to allow storage if the total weight of pallet goes beyond 1000 kg , in this case you need to select "Capacity check according to maximum weight " I don't remember the exact number but it should be 1check the drop down list in the capacity check method
2) looking at wm 1 screen I don't see the gross weight assigned to material please maintain that
Maintain the above two and try again also one more observations
3) LS 10 is a structure which helps to create multiple bins here I hope you have created the bin. Please check the bins (1-012-01-1) also whether maximum weight are updated or not
4) WM2 view palletization data maximum bin quantity field is helpful during replenishment process or with fixed bin strategy