Target specific platform in campaign

[V54328u]

hello,

According to the google document, it says,

"Device types

These are implemented as Platform criteria and are created using a fixed set of criteria IDs that are listed in the documentation. Only positive targeting is allowed and by default a new campaign will contain a platform criterion for each of Desktop, HighEndMobile, and Tablet. With enhanced campaigns, removing Platform criteria is not allowed."

this says that we cannot use negative targeting in platforms(desktop, mobile and tablet), and that by default all are targeted.

so , how do i remove a platform? using the api, i want to target specific platforms, please let me know how is that possible?
is it possible to target only desktop or only mobiles or only tablets?
if possible, which service should i use?

Thanks in advance

[Milind Sankeshware (AdWords API Team)]

Hi Viral

As you have already see in this guide, you won't be able to remove the platform criterion. You can only specify a preference for mobile devices (CriterionId 30001). To set device preference for mobile, you can use devicepreference attribute of AdGroupAdService.mutate service. Let me know if you have any further questions.

Thanks,
Milind, AdWords API Team.