There are Too Many Ad Units Defined with Google Publisher Tags for this Page. Here’s How To Fix It.

There are more than 10 ad units configured for your Header Bidding. Clean up the ad map so 10 or fewer ad units are defined for this page.


Step 1: Audit your Header Bidding configuration to make sure Device is properly set per ad unit:

ad unit

Step 2: If you have a responsive setup, when adding the ad unit twice, Device needs to be specified for each and corresponding Placement ID/parameters added:

ad unit

ad unit

Step 3: We generally do not recommend more than 5 ad units per page unless extremely necessary (e.g. lengthy content).


  1. It is important that you have no more ads on your site than visible content.
  2. Google’s policy no longer restricts publishers in terms of the maximum number of ads per page but recommends that there should be as much original content as ads. For more information watch this video:
  3. Less is more. When you have too many ads on the page, they tend to negatively impact one another, stealing attention or clicks from one another and they all end up losing.
  4. Advertiser bids tend to be lower when there are too many ads. Consider this: why would a buyer pay a $5 CPM for an impression above the fold, when there’s another ad below the fold that he can win only at $2.50?
  5. Less ad slots available could mean tighter competition. Advertisers will put their best bids forward to win.
  6. Run a report broken down by ad unit, consider letting go of the least performing ones.

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