Adding an alias to a secondary domain using domain API

Question

I'm trying, without any success, to add an alias to a secondary domain in my google apps for work using domain api.

In this article it's written: Domain aliases for secondary domains must be added via the Domains API

Using APIs Explorer I tried this query:

POST https://www.googleapis.com/admin/directory/v1/customer/my_customer/domains?key={YOUR_API_KEY}

{
 "domainName": "primarydomain.com",
 "domainAliases": [
  {
   "parentDomainName": "secondarydomain.com",
   "domainAliasName": "secondarydomainalias.it",
   "verified": false
  }
 ]
}

but I get the following error

>     409 Conflict
>     
>     - Hide headers -
>     
>     Cache-Control:  private, max-age=0
>     Content-Encoding:  gzip
>     Content-Length:  136
>     Content-Type:  application/json; charset=UTF-8
>     Date:  Thu, 18 Feb 2016 16:35:14 GMT
>     Expires:  Thu, 18 Feb 2016 16:35:14 GMT
>     Server:  GSE
>     Vary:  Origin, X-Origin
>     
>     {
>      "error": {
>       "errors": [
>        {
>         "domain": "global",
>         "reason": "duplicate",
>         "message": "Domain is already set up."
>        }
>       ],
>       "code": 409,
>       "message": "Domain is already set up."
>      }
>     }

Anyone with the same issue found a solution?

Bests

Alder

Answer 1

Edit: I re-read your question and my answer is changed as I see the problem - both your POST endpoint and data are incorrect.

The correct endpoint is https://www.googleapis.com/admin/directory/v1/customer/<customerId>/domainaliases

and the correct data is

{
  "domainAliasName": secondarydomainalias.it,
  "parentDomainName": secondarydomain.com
}

You can try this here on the domain aliases insert page

You will need your domain's "customerId" to make these requests, get it by doing a get on a user in the domain.