Hello,
Are your referring to the Location Extensions? If yes, please refer to
this guide for more information. The guide also has a
code sample which illustrates in detail on how to add a new location using the GMB API and associate that to AdWords entities. Code samples in Java can be found
here. Code samples in other languages are available
here.
If this is not what you're looking for, could you please share an AdWords UI screenshot which will help us understand the issue.
Thanks,
Bharani, AdWords API Team