Hi Eisuke,
I hope you are doing well. This is Carmela from the Google Ads API support team. Thank you for getting back to us.
With regards to your concern, monthly_search_volumes fields will return the approximate number of searches on this query for the
past twelve months. As for "
Does this 12 month value ever change with GCP account or customer_id or some other factor?" and "
I believe that the value of the number of searches remains the same, am I wrong?", as per this
documentation, please note that metrics like search volume are updated monthly by looking at the last month's search volume. This is the same data as
Google Trends.
Regards,
 |
| Carmela |
| Google Ads API Team |
|
|
| |

ref:_00D1U1174p._5004Q2ghpq1:ref