Cybersource mdd field имя продукта 20 символов ограничения

Мы находимся в интеграции кибер-ресурсов с Woocomerce.
Интеграция завершена, но для кибер-ресурса требуется ограничение в 20 символов в области продукта.
Я использую это поле Mdd, пожалуйста, проверьте его и предложите мне

add_filter( 'cybersource_add_signed_field_names', 'cybersource_add_mdd_fields' );

function cybersource_add_mdd_fields(){

global $woocommerce;

$consumer_id = get_current_user_id();
$previous_customer = ( $consumer_id == 0 ? 'NO' : 'YES' );


// Get Cart Items
$cart_items = $woocommerce->cart->get_cart();

$cb_items = array();

if( ! empty( $cart_items ) ){

if( count($cart_items) == 1 ){

$x = 0;
foreach( $cart_items  as $values ){

if( $values[ 'product_id' ] ){
$product = new WC_Product( $values['product_id']);
$products_cats = $product->get_category_ids();
} else {
$product = new WC_Product( $values['variation_id']);
$products_cats = $product->get_category_ids();
}


$_product = $values['data']->post;

$cb_items[ 'merchant_defined_data3' ] = $_product->post_title;

if( is_array($products_cats) && ! empty($products_cats)){
$c = array();
foreach ($products_cats as $value) {
$c[] = get_cat_name( $value );
}

$products_cats = implode( ',', $c );
} else {
$products_cats = '';
}

$cb_items[ 'merchant_defined_data4' ] = $products_cats;

$x++;
}

} else {


$x = 0;
foreach( $cart_items  as $values ){

if( $values[ 'product_id' ] ){
$product = new WC_Product( $values['product_id']);
$products_cats = $product->get_category_ids();
} else {
$product = new WC_Product( $values['variation_id']);
$products_cats = $product->get_category_ids();
}


$_product               = $values['data']->post;

$mdd_product[ 'name' ][]  = $_product->post_title;

if( ! empty($products_cats) && is_array($products_cats)){
foreach ( $products_cats as $key => $value) {
$mdd_product[ 'cats' ][]  = $value;
}
} else {
$mdd_product[ 'cats' ]  = $products_cats;
}


$x++;
}



if( ! empty( $mdd_product[ 'name' ] ) && is_array($mdd_product[ 'name' ])){
$cb_items[ 'merchant_defined_data3' ] = implode( ',', $mdd_product[ 'name' ] );
}

if( ! empty($mdd_product[ 'cats' ]) && is_array($mdd_product[ 'cats' ] )){
$c = array();

foreach ($mdd_product[ 'cats' ] as  $value) {
$c[] = get_cat_name( $value );
}
$cb_items[ 'merchant_defined_data4' ] = implode( ',', $c);
}

}

}


$shipping_class = array_values($cart_items);


if( ! empty( $shipping_class)){
$shipping_class = $shipping_class[0]['data']->get_shipping_class();

if( empty($shipping_class) ){
$shipping_class = WC()->session->get('chosen_shipping_methods');
$shipping_class = $shipping_class[0];
}



} else {
$shipping_class = 'No shipping method available';
}

$mdd1 =  array(
'consumer_id'             =>  $consumer_id, // Consumer ID
'merchant_defined_data1'  => __( 'WC', 'woocommerce'  ),  // Chanel of Operation
'merchant_defined_data2'  => __( 'YES', 'woocommerce'  ), // 3D secure registration
'merchant_defined_data5'  =>  $previous_customer, // Previous Customer
'merchant_defined_data6'  =>  $shipping_class, // Shipping Method
'merchant_defined_data7'  =>  WC()->cart->get_cart_contents_count(), // Number of Items Sold
'merchant_defined_data8'  =>  $woocommerce->customer->get_country(), // Product Shipping Country
'merchant_defined_data20' => __( 'NO', 'woocommerce'  ), // VIP Customer

);

$mdd = array_merge( $mdd1, $cb_items );

return $mdd;

}