Apple Search Ads connector only supports custom report breakdowns by countryOrRegion (country) and deviceClass. The adminArea/state breakdown is not currently available in the custom report configuration, so it can't be created.

This is really frustrating when trying to have a US report with the metrics grouped by state (e.g. Minnesota, New Jersey, California, etc.). The data is already available in Apple Ads API, the documentation mentions the metric adminArea for this purpose, and it is available for the adgroup level of granularity.

Could you please add it?