Requests

When the ad source or ad source instance dimension is applied 

This is the number of times each ad source received a request. Some of these requests may be counted more than once as the request moves through the mediation waterfall. For example, a single request made to Network A, Network B, and Network C in the mediation stack will be counted 3 times. 

The summary row in the report shows:

• Unique ad unit requests: The total number of unique attempts to request an ad. This number doesn't count the same request multiple times. 
  Example: A single request made to Network A, Network B, and Network C in the mediation waterfall will only be counted 1 time
• Total ad source requests: The number of times your app or ad unit sent a request to an ad source. Requests are counted even if no ads are returned. If you’ve included an ad source multiple times in a mediation group, some of these requests may be counted more than once as the request moves through the mediation waterfall. 

When the mediation group dimension is applied 

This is the number of ad requests sent to a mediation group. A request is counted when it’s sent to any of the ad sources in a mediation group. The request is only counted once per mediation group, even if the request moves through the mediation waterfall. 

The summary row in the report shows:

• Unique ad unit requests: The total number of unique attempts to request an ad. This number doesn't count the same request multiple times. 
  Example: A single request made to Network A, Network B, and Network C in the mediation waterfall will only be counted 1 time
• Total mediation group requests: The number of ad requests sent to a mediation group. 

A request is counted when it’s sent to any of the ad sources in a mediation group. If the request is sent to multiple ad sources in the mediation group, it’s only counted once.