Multiple Warehouse

[physio]

Good Morning, i like to use stevebauman/inventory. Sorry for my english.
I have created an application where some users can manage a little inventory (every warehouse is separeted by users). I have added a column into inventory table and add an restriction (a where into query) for show the items of a user.
How i can do for make the possibility to insert multiple SKU code (from barcode reader)? The first save correct, but other has the auto SKU code (because there is also into db).
can you help me?