The source node in most cases contains the sample message as written by the developer. If it looks like a dot-delimitted string such as "form.label.firstname", then the developer has not provided a default message.

Cannot add base product "{{ productName }}" to the cart. Nie można dodać "{{ productName }}" do koszyka. key: ibexa.cart.batch_order.base_product.error Cannot add "{{ productName }}" to the cart. Nie można dodać "{{ productName }}" do koszyka. key: ibexa.cart.batch_order.cannot_be_added_to_cart.error Product "{{ productName }}" (code "{{ productCode }}") is not available in the required quantity {{ quantity }}. Produkt "{{ productName }}" (kod "{{ productCode }}") nie jest dostępny w wymaganej ilości {{ quantity }}. key: ibexa.cart.product_available_for_quantity_increase.error Product with code "{{ productCode }}" doesn't exist. Produkt z kodem "{{ productCode }}" nie istnieje. key: ibexa.cart.product_with_code_exists.error The quantity field cannot be empty. Pole ilości nie może być puste. key: ibexa.cart.quick_order.entry