Note:  Based on popular feedback, we are extending the sunset date for this change. This feature will continue working in older API versions until v16 sunsets. Sunset Schedule can be found here .
Starting the week of August 19, 2024 , we will roll out a change that removes the ability to set the page_size GoogleAdsService.Search page_size field is set: 
This change was previously introduced as a versioned change in version v17  of the API. The current change introduces the change to the older API versions, making the API consistent across all API versions. 
What do I need to change? 
If you use version v17 of the API, no changes are required. If you use an older version of the API and set the page_size field in your GoogleAdsService.Search 
How to get help 
If you have any questions or need help, check out the Google Ads API support page  for options.
Anash P. Oommen , Google Ads API Team