How to enable Out of Stock message when quantity input exceeds stock levels?

Hello,

Is there a way for me to display a message saying “Max quantity reached” or “Sorry we do not have enough quantity in stock”?

In Cart, when user tries to click the “+” button, nothing changes. I’d like to display an error message to inform the user that they cannot exceed that number.

I’ve had a look through the code and this feature is there, but does not seem to be working. Stock management feature is enabled for all products.

I do not want to enable backorders, nor do I want to set max/min levels manually.

// We only need to check products managing stock, with a limited stock qty.
			if ( ! $product->managing_stock() || $product->backorders_allowed() ) {
				continue;
			}

			// Check stock based on all items in the cart and consider any held stock within pending orders.
			$held_stock     = ( $hold_stock_minutes > 0 ) ? wc_get_held_stock_quantity( $product, $current_session_order_id ) : 0;
			$required_stock = $product_qty_in_cart[ $product->get_stock_managed_by_id() ];

			if ( $product->get_stock_quantity() < ( $held_stock + $required_stock ) ) {
				/* translators: 1: product name 2: quantity in stock */
				$error->add( 'out-of-stock', sprintf( __( 'Sorry, we do not have enough "%1$s" in stock to fulfill your order (%2$s available). We apologize for any inconvenience caused.', 'woocommerce' ), $product->get_name(), wc_format_stock_quantity_for_display( $product->get_stock_quantity() - $held_stock, $product ) ) );
				return $error;
			}
		}

		return true;
	}