Code-Snippets-Functions/Execute a function on a child site/WooCommerce/emove-quantity-field-for-a-specific-products.txt

add_filter( 'woocommerce_is_sold_individually', 'remove_all_qty_fields_on_specific_product', 10, 2 );
function remove_all_qty_fields_on_specific_product( $sold_individually, $product ) {
    // Here define the desired product Id(s)
    $targeted_product_ids = array( 90 );
    if ( count(array_intersect([$product->get_id(), $product->get_parent_id()], $targeted_product_ids) ) > 0 ) {
        return true;
    }
    return $sold_individually;
}