| item_stock | BigDecimal | Number of available item in inventory, -1 means unlimited item stock | [default to null] |
| category_stock | BigDecimal | Number of available item in inventory per category, -1 means unlimited category stock | [default to null] |
| available | BigDecimal | Available stock that CAN be added to cart, -1 means unlimited stock for both item and category stock Use this as general rule of thumb in displaying item stock availability in UI This SHOULD equal to item_stock if category_stock is higher, and vice versa E.g. item_stock = 3 category_stock = 5 available = 3 | [default to null] |