How to prevent ordering items that are out of stock in App4Sales?

In App4Sales, you can find the following two settings under Menu > Settings > Catalog tab:

Correct ordering with available stock

When enabled, this setting automatically removes sold-out items from the cart or adjusts the quantity if the order exceeds the available stock.

Notify when not enough stock for order line

When adding an item to the shopping cart, the catalogue will display the message: 'There is not enough stock for current ordered quantity for item ...'. You then have the option to change the quantity or continue with the order. However, it is important to note that with this setting, it is still possible to order more than the available stock.