Add combinations from web service

[jbike]

I would like to add combinations of the attributes, of a product using my web service, but still throws this error:

 

Generated output:

iwwshr.Exceptions.WebServiceCallFailedException: The remote server returned an error: (400) Bad Request. ProtocolError http://myshop/api/combinations

the web server returned:

<?xml version="1.0" encoding="UTF-8"?>

<prestashop xmlns:xlink="http://www.w3.org/1999/xlink">

<errors>

<error>

<code><![CDATA[85]]></code>

<message><![CDATA[Validation error: "Combination -> id_product = 

355

"]]></message>

</error>

</errors>

</prestashop>

 

   at Tool.Classes.Runtime.HttpOperationWrapper.DoCall()

   at Tool.Classes.Runtime.HttpOperationWrapper.DoSampleCall(String xmlCallData)


How it works ? 

Do I have to first add product attributes and then create a new combination,

or hook up a dictionary of attributes? Please help me.

My Presta  : 1.4.6.2
 

Edited September 20, 2013 by jbike (see edit history)