The coupons API (Application Programming Interface) is implemented as an XML based webservice. This service only available to Premium accounts.
The location of the web service is:
https://www.mals-e.net/mapis/coupons.php
The request should be a form POST and must include the following fields:
| username | Your shopping cart username |
| apikey | Your api key, pick this up from Admin |
| version | Should be set to the value 1.0 |
| action | Should be set to the value create |
| couponcode | Sould be unique, alpha-numeric characters and spaces only |
| type | The type of discount can be Fixed, Percent, Peritem or Freeship |
| rate | The numeric value of the discount without a percentage or currency symbol |
| minvalue | Minimim order value for which it can be used (zero if there is no minimum) |
| expires | Expires midnight of (leave it blank for never) YYY-MM-DD |
| usage | Once or Multiple. |
| maxvalue | true or false. True if it is a fixed value discount and it should not exceed the sub-total value of the products |
| freeshipping | true or false. A Fixed, Percent or Peritem discount can also be free shipping. |
| scode | SKU (scode) which is used with the condition |
| condition | The discount is applied to products with an scode value which: 0 =
is equal to |
Usage - the use once option. A coupon is only marked as used once a payment has been confirmed. There is a short period of time between when a person enters the coupon and when they pay, during that period someone else may use the same coupon. With PayPal, it will be when the cart receives the IPN confirming payment and in the case of eCheck that may take several days.
Expires. The coupon expires at midnight UTC plus your local time offset which you set in Admin.
SKU (scode) Scode is an optional value you can set in your Buy Now buttons. By using the conditions you can allow the coupon to be applied to a group of products.