There is currently no option to modify stock levels via API or import once Neto Inventory is installed. This functionality needs to be added otherwise tools such as .wms cannot be used, since they cannot modify the stock levels. Modification via a stock adjustment would be fine and still keep records (rather than just a raw adjustment of the number), but that's not currently possible. Was told verbally a couple months ago that this is in development, but can't find anything to say if or when this will happen.