Size Mismatch Between Ad Requested and Ad Rendered. Here’s How To Fix It

This post was most recently updated on November 7th, 2021

The ad serving is not of the same size as the one requested.

Troubleshooting

Step 1: Log into Ad Manager > Inventory > Ad Units

Step 2: Search for the ad unit/s and check if you have the correct size/s in the settings. Edit and make corrections if necessary.

Step 3: Cross-check the ad sizes configured for each ad unit versus the sizes in Ad Manager

Step 4: If you have an ON-page setup, audit the sizes defined in your source code. Make the corrections if necessary.

Step 5: If you have Size Mapping enabled, add the relevant Bidder-level size/s in your Header Bidding configuration:

Step 6: Audit the Placement ID’s or parameters configured for each bidder to make sure they match the Ad Unit sizes.

Step 7: Re-run PubGuru Ad Inspector after making changes and see if the error persists. If yes:

For some bidders, you can log into their user interface and check the settings.

If unable to do so, reach out to your representative to have them re-check.

Need more help? Send us an email at support@monetizemore.com or log in to PubGuru App and use the Chat widget for immediate support.