Hello,
Thank you for reaching out to us.
With regard to your concern, I'm afraid that is the expected behavior of the report wherein its result will be segmented/divided by adgroup criterion. What we can suggest is to include the customer.descriptive_name in your SELECT clause, then post process its result using this field to get the metrics on a customer level. You may also provide to us a un-cropped screenshot of your Google Ads UI showing the entity/report that you want to pull, so we could check and provide guidance accordingly.
Regards,
 |
Google Ads API Team |

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