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Amplitude's utm user properties not returned in API

  • January 24, 2025
  • 2 replies
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nmarkman

Hello!

I’m trying to use the Amplitude API to retrieve user properties, specifically I am using the GET user activity call (https://amplitude.com/api/2/useractivity). I am not seeing the amplitude-set user properties for any of the utms available in this data (utm_source, utm_campaign, etc).

Is this expected?

Best answer by nmarkman

Hey, ​@liuaud! Disregard this! I didn’t realize that amplitude would not send the properties at all if they weren’t present for a user associated with the event. I was expecting to see the property names in user props with “null” values, but for these particular events it looks like amplitude only sets them when there is data and I was simply looking at users who did not have them set. 

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Nick Markman
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liuaud
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  • liuaud
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  • January 28, 2025
Hi Nick,

Thank you for writing in! My name is Audrey, and I am your Technical Support Agent here to help you.

Would you mind sending over a link to a specific user profile that you are trying to query with the GET call? This will help a lot to troubleshoot.

Best,
Audrey


P.S. Checkout upcoming events and user meetups on our events page.
nmarkman
  • nmarkman
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  • February 4, 2025

Hey, ​@liuaud! Disregard this! I didn’t realize that amplitude would not send the properties at all if they weren’t present for a user associated with the event. I was expecting to see the property names in user props with “null” values, but for these particular events it looks like amplitude only sets them when there is data and I was simply looking at users who did not have them set. 

Nick Markman
liuaud
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