In the case that the "Insufficient Stock" message appears, it is possible that the products in your shopping cart are not available and there are not enough in stock for the number of products you wish to purchase. You may need to reduce the number of products in your shopping cart.
According to our online store system, the product is not secured at the time the product is placed in the cart, but only once the order is placed and confirmed. Therefore, depending on the number of products remaining in stock, if another customer with the same product in his/her shopping cart places an order that is confirmed first, the product may be out of stock and the message "Please reduce the number due to insufficient stock" may appear, preventing the customer from placing a new order.