Hello,
I found a google dev blog post saying that, in order to use LocationGroups with LocationExtensionOperand, I have to provide a feedId, and it says that I should be able to retrieve a feedId for this operation through the FeedMappingService getting the objects with CriterionType 77.
I did this, but it returns around 17 objects when I have only one Google My Business Locations option when trying to create a LocationGroup inside Adwords. I think it's because each one of these 17 are associated to a campaign, am I going on the right direction?
If so, how do I retrieve the Google My Business Location than I can in fact use inside that campaign? How do I get the Google My Business Location object that I have on the select inside adwords? (+Location > Advanced Search > Location Groups > My Locations > Google My Business Location)