Hi Olayinka,
Thank you for the reply.
As with other campaign types, you can use
GoogleAdsService.SearchStream to retrieve attributes and performance metrics for Performance Max campaigns but kindly note that you should not select an
AdGroup when querying Performance Max campaigns, as no campaigns will be returned. Do not also segment by
AssetGroup as this is not permitted. You may check this
documentation for more details. That said, you may not use the
ad_group and
ad_group_ad report for the Performance Max.