External API function not working as expected - price override twice

[JinVan]

I want to use the External API function - 'Add Order' to create a order, additionally, use a promocode to override the price of the product . As expected, it will create a order with the override price . But Actually , it create a order and override the price both product and domain. I only want to override the price of product.

It works fine with the WHMCS, but it get wrong with my own website.

I forget some parameters ? or I use the API in a wrong way?

anyone can help me?

 

The Add Order function parameters like this:

username=xxx

password=xxx

responstype=json

action=addorder

clientid=x

pid=x

paymentmethod=paypal

billingcycle=annually

domain=xxx.com

domaintype=register

regperiod=1

dnsmanagement=on

idprotection=on

promocode=xxxx

 

The promocode settings like this:

Promotion Code=xxxx

Type=Price Override

Value=100

Applies To=xxx(only applies to my product)

Billing Cycles=Annually(for Products/Services)/10 Years(for Domains because I don't want it applies to the domains registered one year)

Apply Once=checked

other setting is default

 

And I set the product to offer a free domain registration/transfer only (renew as normal),

and set the price of ID Protection to $30

 

So, the right result is : I buy a product with a price of $300, choose a domain(free) and its ID Protection of $30, at the admin area, I will see a order which has a product of $100 and a free domain and ID Protection of $30 ,the total amount will be $130, but I get the total amount of $200, seems that it price override twice.