Because, they use different SUT/ specific for a particular warehouse.
Philippines is using (A6 : Euro pallet) and Srilanka is using (PL: Pallet).
So while receiving goods, the same 1540 cases (44 pallets) are unpacked and packed in 36 pallets and 6 extra cases would be there.
We dont have a problem while receiving.
As you mentioned, custom TO form needs to be changed. Thanks for the kind help.