Add product coupon

Apply discount coupons to products added to the shopping cart.

Request parameters

Parameter	Type / Description
sessionID	Required (string) Session identifier, which is the output of the Login method. An exception is thrown if the values are incorrect.
coupon	Required (string) The coupon / voucher code for a promotion impacting a product added to cart.

Request sample

<?php

require ('PATH_TO_AUTH');  // Authentication example: https://knowledgecenter.avangate.com/Integration/Channel_Manager_API/JSON-RPC/02Authentication
require ('PATH_TO_SET_PARTNER'); // setPartner example: https://knowledgecenter.avangate.com/Integration/Channel_Manager_API/JSON-RPC/06Reference/Partner/00Set_partner
require ('PATH_TO_ADD_PRODUCT'); // addProduct example: https://knowledgecenter.avangate.com/Integration/Channel_Manager_API/JSON-RPC/06Reference/08Place_an_order/00Add_product_to_cart

$couponCode = 'YOUR_COUPON_CODE';

$jsonRpcRequest = array (
'jsonrpc' => '2.0',
'id' => $i++,
'method' => 'setCoupon',
'params' => array($sessionID,$couponCode)
);

var_dump (callRPC((Object)$jsonRpcRequest, $host));

Response parameters

Parameter	Type / Description
Result	Boolean True or false

Errors

Error	Description
EMPTY_CART	The shopping cart is empty.
INVALID_COUPON_CODE	The coupon code is empty or invalid.