Validate existing location group via API

[Assaf Magen]

Hello,

In Adwords UI in create new campaign --> locations --> advanced search --> location groups tab (see attached)

when I key in location, choose group (like "Places of interest") and filter type (like "Airports") and click add, there is an error message in case group is not available for this location :

Airports are not available for the location you specified. Please enter another location.

I wish to perform the same validation using Adwords API  before I inject the location group into the campaign - how do I do that? 

which service should I use? 

I'm currently working with version 201406

thanks

[Ray Tsang (AdWords API Team)]

Assaf,

Please look into the LocationGroups criterion.

Thanks,

Ray