Expected UTM, but found “undefined”. Here’s how to fix it.

UTM tracking is not working as expected. The expected UTM is not found and instead returns an “undefined” value.

Our engineering team has been notified but try the following troubleshooting steps:

Step 1: Try upgrading your PubGuru Header Bidding configuration version

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Step 2: Save and publish. Re-run PubGuru Ad Inspector and see if the error persists.

Step 3: Re-check UTM in Google Ad Manager to make sure it exists (Inventory > Key-values)

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Step 4: If UTM in question is not found, have it added manually.

Step 5: Clear your browser cache and re-run the site and append with one of your UTMs (e.g. buzzdrives.com/?utm_source=google)

Step 6: Right click > Inspect > Reload the page > click on “Network” tab > search for “securepubads”

Step 7: Click on the one that starts with “ads?”

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Step 8: Click on ‘Headers’ and under ‘Query String Params’ > “iu” shows which ad unit it is triggered for

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Step 9: “scp” shows the parameters being passed

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