Diagnosing Marketo Munchkin Issues

The Marketo Munchkin code is like the headlights of a vehicle. Without Munchkin tracking, Marketo is effectively blind. There are many issues which will occur in Marketo if tracking is not working: triggers won’t work, campaigns will fail, and valuable analytics data are is not being collected, among many others.

So what do you do when the Marketo Munchkin stops working? In this article, we explore the most common scenarios in which this occurs, as well as help you isolate the cause and fix it.

Scenario 1: The Marketo Munchkin is deleted

Perhaps, your website has undergone an overhaul or your web developer just accidently deleted the Marketo Munchkin code. Either way, this one is easy to diagnose and fix.

To diagnose, simply run the online Marketo Health Checker which will tell you instantly whether the tracking code is installed correctly on your website. If the munchkin code is missing, let your IT team know and they will reinstall it.

To prevent this from happening again, subscribe to weekly health checks to your inbox via the Marketo Health Checker. That way you’ll know early when the Marketo Munchkin is missing.

Scenario 2: The Marketo Munchkin is not ‘firing’

If the Marketo Health Checker returned positive results but you are still not seeing website activity, then there is likely an issue with your Marketo Munchkin.

To check if this is the case, you need to perform the following check on your website:

  • Load your website in your browser
  • Right-click on screen and select ‘Inspect Element’
  • Click the ‘Network Tab’
  • Scroll through the list and look for:

marketo munchkin1

If you can’t locate the ‘visit Webpage’ request (at the  bottom), then your Marketo Munchkin isn’t firing. In this case, it’s likely caused by a conflict with another bit of Javascript code.

To fix this, switch to the ‘Simple’ Munchkin code:

marketo munchkin2


You will need to send the resulting Marketo Munchkin code to your IT team to add to your website. If you are already using the Simple code, you will need to contact support for further troubleshooting.

Scenario 3: The Marketo Munchkin is ‘firing’

If you checked your browser and the Marketo Munchkin code is activating according to your browser, then there are two possible cases:

Case 1 – Your Munchkin Account ID is incorrect

Perform a health check with the Marketo Health Checker. Look for the instance code that is included in the tracking report. This is sent via an email:

marketo munchkin3

Make sure the code (e.g. 722-DHO-329) matches your Munchkin Account ID in your Marketo setup in the admin screen:

marketo munchkin4

If it doesn’t, you will need to get your IT to correct the Marketo Munchkin on your website.

Case 2 – Your Munchkin Account ID is correct

If the Marketo Munchkin is firing and the Munchkin Account ID is matching your Marketo then this likely means there is a slowdown in the tracking from Marketo’s side. Wait a few hours and see if it resolves itself.

If it doesn’t, you will need to let Marketo Support know. Make sure you let Support know you have conducted a thorough analysis let them know you have followed these Marketo Munchkin diagnosis steps. This will save them time as they skip the steps you’you’ve already conducted.

Follow this guide each time you have a Marketo Munchkin issue and you should be able to diagnose and fix the problem yourself 9 out of 10 times. If you have any other scenarios to add, let us know and we will add it to the article.

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