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Loop step won't validate even though 'Values to Loop' is configured—how do I troubleshoot this?

  • August 15, 2026
  • 1 reply
  • 17 views

"Loop step won't validate even though 'Values to Loop' is configured—how do I troubleshoot this?"

I'm building a Zap that:

  1. Captures meeting transcripts from Plaud
  2. Uses AI by Zapier with isOutputArray: true to extract multiple action items as an array
  3. Uses Looping by Zapier to iterate through each action item
  4. Creates a ClickUp task for each item in the loop

The problem: The Loop step is configured with:

  • Left field: action_item
  • Right field: {{_GEN_1786693645305__result__items[]}}

But when I try to test or publish, I get: "Error: Required field 'Values to Loop' (loop_values) is missing."

The field is clearly set, and the AI step is returning an array of objects. Has anyone encountered this? Is there a specific format the loop_values field needs, or could this be a validation bug?

1 reply

SamB
Community Manager
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  • Community Manager
  • August 17, 2026

Hi and welcome to the Community ​@Travis73! 👋

With that error it’s usually either that a field hasn’t been selected, or the field that has been selected is empty. 

What does the output from your AI action look like exactly? Does it look similar to the following example, with multiple line item fields available for each:
f324cf6c7b7b58404fb2b027e39b8d34.png

Just wondering if there’s a difference in how it’s outputting the line items as I did some testing with AI and Looping with some example line items then mapped it to the Looping action and it worked without error, so doesn’t appear to be a bug:

445437f36272cbae208c603fdad9ea6f.png
10d2ac27210c27f8de7291b727420aba.png
 

Can you share screenshots of the output from the AI action and the set up of the Looping action? Use a tool like Zappy to remove any personal or sensitive info before sharing here. That’ll help us to better determine why it’s erroring.