Prestashop webservice API creating cart rules - php

Question

Have been trying to create a cart rule using Prestashop web-service with no luck.
Tried this https://github.com/PrestaShop/PrestaShop-webservice-lib/blob/master/examples/Create.php (with cart_rules value replaced away from customers).
But I always get the same error: Property CartRule->name is empty.
Request:
<?xml version="1.0" encoding="UTF-8"?>
<prestashop xmlns:xlink="http://www.w3.org/1999/xlink">
<cart_rule>
<id></id>
<id_customer>1</id_customer>
<date_from>2017-09-05 13:00:00</date_from>
<date_to>2020-06-30 13:00:00</date_to>
<description>1</description>
<quantity>1</quantity>
<quantity_per_user>1</quantity_per_user>
<priority>1</priority>
<partial_use>1</partial_use>
<code>11111111111111111111111111111111111111111111111111</code>
<minimum_amount>1</minimum_amount>
<minimum_amount_tax>1</minimum_amount_tax>
<minimum_amount_currency>1</minimum_amount_currency>
<minimum_amount_shipping>1</minimum_amount_shipping>
<country_restriction>1</country_restriction>
<carrier_restriction>1</carrier_restriction>
<group_restriction>1</group_restriction>
<cart_rule_restriction>1</cart_rule_restriction>
<product_restriction>1</product_restriction>
<shop_restriction>1</shop_restriction>
<free_shipping>1</free_shipping>
<reduction_percent>151</reduction_percent>
<reduction_amount>1</reduction_amount>
<reduction_tax>1</reduction_tax>
<reduction_currency>1</reduction_currency>
<reduction_product>1</reduction_product>
<reduction_exclude_special>1</reduction_exclude_special>
<gift_product>1</gift_product>
<gift_product_attribute>1</gift_product_attribute>
<highlight>1</highlight>
<active>1</active>
<date_add>1</date_add>
<date_upd>1</date_upd>
<name>TEST NAME</name>
</cart_rule>
</prestashop>
Response:
<?xml version="1.0" encoding="UTF-8"?>
<prestashop xmlns:xlink="http://www.w3.org/1999/xlink">
<errors>
<error>
<code><![CDATA[84]]></code>
<message><![CDATA[Validation error: "Property CartRule->name is empty."]]></message>
</error>
</errors>
</prestashop>

Answer 1

The cart rule name is a multi-language field, so you have to specify the language id.
Try this:
<cart_rule>
...
<name>
<language id="1">TEST NAME</language>
</name>
...
</cart_rule>
Obviously you have to use the right ID language