V8 - Calculating available-for-sale quantities
The Available for sale quantity on the Items list and other places in the system represents the number of units that can be sold and shipped immediately to customers. To be specific, SOS Inventory uses the following formula to calculate the quantity available for sale:
Available for sale = Quantity on hand – Quantity on open sales orders – Quantity in non-nettable locations
The On WO number and the On RMA number are not included in the available for sale calculation. In addition, if the item is a component of an assembly, its available for sale number might be affected by the available for sale status of the assembly item, as changes in the available for sale quantity of an assembly item can generate demand for its components.
If you have enabled the Show available for sale on forms setting (Settings > Sales settings > General), you can see the available-for-sale quantity on sales forms by hovering over the line item's Quantity value.