Hi Jia,
Thank you for your logs, I reproduced your issue. This is working as intended for the API, because I saw the same in a report in the UI's predefined reports for shopping by item Id there was returned a row that didn't have an item Id. Since the API can only be a conduit for the UI you may reach out to
product support.
Regards,
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| Aryeh Baker |
| Google Ads API Team |
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