We have a shopping campaign with around 12,000 product partitions segmented on ProductOfferId all in a single ad group.
Every product we have SHOULD have it's own product partition leaving the "Everything Else" product group empty, but we appear to be getting impressions and clicks against "Everything Else" so it seems like this isn't the case.
So obviously we'd like to find out what is in the product group, but the GUI is giving us a generic "There was an error with your operation." error when we click on the View Products icon.
Can anyone suggest a way to get the contents programmatically?
If we do a GET request to the AdGroupCriterionService the "Other" group is distinguished solely by not having a OfferId at all, where-as populated partitions obviously list the OfferId of the product in question.