Avoiding overlapping values in reports

Note: This topic applies to reports created using Reports in the Index UI The Index UI at app.indexexchange.com that allows you to manage integration settings, such as inventory, campaign, and deal settings. and the Reporting API An Index product that provides aggregated reporting data that can be delivered through email, Amazon S3 bucket, or pulled through the API. The Reporting API allows customers to create their own customized reports and schedule their automated delivery..

Metrics like ad spend and impressions can show inaccurate totals when summed. This is because a single event, for example an impression, can be associated with multiple dimension values, for example multiple Privacy Sandbox topics. As a result, if you perform any summing to your reports, you may see incorrect totals.

We recommend that you avoid performing any additional summing on your end to the metrics in our reports.

An example: A publisher has two Privacy Sandbox topics defined

An article on a publisher The owner of a website or app where advertisements are served.'s site titled "Predictions for the Superbowl" has the following topic tags:

• Sports

• News

Any impression that is associated with that article can show up in reporting, in the topic_name field, with multiple associated topic tags, for example:

If the Media Owner sums their report, they'll see 1,000 impressions instead of 500, which is the true number.