Learn how to configure the Default Impressions validation rules for CM360 so you have more control over how many default ads are served. 

The Default Impressions rule is specific to Campaign Manager 360. See a full list of sources and their validation rules here

When no ads are eligible to be served in a placement, CM360 automatically serves default ads. This ensures that an ad is always shown. However, you may want to check on them if they are served too often. Learn more about default ads here.

The Default Impressions validation rule checks that your placements are not serving default ads above a predefined limit. 


The validation works by checking the ratio of default ads out of the total served ads.

Its configuration consists in defining the maximum allowed threshold (in %) within a specific reporting range. 

  1. Set the threshold limit
  2. Define a reporting range


This is the ratio of how many served default impressions you can allow out of the total served impressions for each placement. 

The validation runs on the placement level and if the percentage exceeds the limit, a finding is marked.  

Note: When resolving findings, you must access CM360 and Accutics Validate at the same time in order to compare results.

In CM360, default impressions can be found in the Reporting and Attribution UI by going to “Summary” and adding “Ad” to the table. Default ads are always named “Default […] Ad.



Reporting range

Define the range of impressions that should be included to date. This can be set by:

  • Hour(s)
  • Day(s)
  • Week(s)

Note: Avoid selecting a very short date range. The impression and click data is updated only every 3-4 hours. 
Learn more about data freshness here.