On October 1, 2024 , the Anonymous Inventory Modeling (AIM) reporting dimension  will sunset and DST/ROC (Regulatory Operating Costs) and Total Media Cost metrics will become incompatible with YouTube reports  in Display & Video 360. This will impact the structure of the reports that can be created and run using the Bid Manager API.
The relevant AIM dimension is defined by Filter  value FILTER_ANONYMOUS_INVENTORY_MODELING. Once sunset, queries.create queries.run Query 
The relevant cost metrics are defined by any Metric  value using the prefix METRIC_TOTAL_MEDIA_COST_ or METRIC_FEE32_. Starting October 1, queries.create queries.run Query ReportType YOUTUBE that use these metrics will return a 400 error. In the weeks following October 1, we will update existing YouTube queries that use these values to remove the metrics. In place of total cost metrics, we recommend the use of individual media cost metrics instead, which can be added together with other supported fees to calculate the now unavailable total media cost.
To avoid any interruption of service, review your reports to remove the AIM dimension from any existing reports and all relevant cost metrics from any existing YouTube reports.
Read more about these changes on our release notes .
If you run into issues or have questions about these changes, please contact us using our new Bid Manager API Technical support contact form .