Hi Hwansang,
Thank you for providing more details to your concern.
I tried to use the query validator, GAQL builder for keywords and create a report on my test account which using device segment and ad_group_criterion, and I can see no error with this combination. With this, allow me to create a feature request to my team to update the device segment document to include the ad_group_criterion there, subject for review.
Please keep an eye on that
document for this specific update. Please follow our
blog also to receive updates and new releases.
Regards,
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| Ernie John |
| Google Ads API Team |
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