Prevent customers from being able to add sold out products to cart

Prevent customers from being able to add sold out products to cart

As soon as the stock level of a product is 0, the message ‘Not available’ is displayed. This is ok so far.
But unfortunately, it is still possible to add this product to the cart.
Is there a way to make it impossible to order products with a stock quantity of 0?

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Aw: Prevent customers from being able to add sold out products to cart

configuration / Product

Hide products which are not avaible on the stock: (Y/N )
Hide buy button when product isn't available in stock: Y

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Aw: Prevent customers from being able to add sold out products to cart

This works, thank you. I was not aware that these two options are only visible when the option «Stock» is enabled in the «Shop-Functions» tab.