excluding placements / negative criteria - by Mobile application

[Berry Tsakala]

Few weeks ago i asked how to exclude a placement.

( I solved it, and the discussion is here  https://groups.google.com/forum/#!topic/adwords-api/Tw6VyUasa7I )

Now I want to exclude a Mobile App.

(The questions are at the end of the post)

in the UI, I see all sorts of placements: urls, mobile apps (and maybe others?)

A mobile app often looks like "mobile::2-com.berry,tsakala".

If I try to exclude by placementUrl: placement='mobile::2-com.berry,tsakala' I receive an error from google API:

[CriterionError.INVALID_FORMAT_FOR_PLACEMENT_URL @ operations[0].operand.criterion.url; trigger:'mobileapp::2-ix.com.android.virtualwalkietalkie']

So I tried to follow the documentation:

https://developers.google.com/adwords/api/docs/reference/v201306/CampaignCriterionService.NegativeCampaignCriterion

 -->  https://developers.google.com/adwords/api/docs/reference/v201306/CampaignCriterionService.MobileApplication

There's "xsi_type = 'MobileApplication'" But 

• it appears to be "beta" <--- what does "Beta" mean in this context?
  
• if I try to use it anyway, i receive this error:
  [BetaError.BETA_FEATURE @ operations[0].operand.criterion]
  

Questions:

1. Is there ANOTHER way of excluding a specific mobile app via API?
2. is there a way to try the Beta API ?
   
3. Am I doing something wrong ? :)

The Adwords API version I'm using is v201306  (same as mentioned in the mobileApplication docs)

I'm using Python, if it matters.

This is my current code:

placement_url = "mobileapp::2-com.berry,tsakala"

placement_url = placement_url.replace('mobileapp::', "")
operations = [ {
    'operator': 'ADD',
    'operand': {
        'type': 'NegativeCampaignCriterion',
        'campaignId': campaign_id,
        'criterion': {
            'xsi_type': 'MobileApplication',  
            'appId': placement_url,
        },
    }
} ]

[Danial Klimkin]

Hello Berry,

Unfortunately no, this feature is not publicly available and we are not adding any new users to the list currently.

The only alternative is to use the UI.

-Danial, AdWords API Team.