Attachment from form to planner isn't working

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Posted on by CU01041530-0

Hi everyone and @ChadVKealey,

The flow i have in Power Automation from Form to planner works but the attachment section only works sometimes and sometimes it doesn't. This is the error message i got when it's fail:

Please help or give me some advise what to do. Thanks in advance!!

{"error":{"code":400,"message":"Key with path references.resourceLink is duplicated. Duplicate values are not supported.","source":"flow-apim-msmanaged-na-westus2-01.azure-apim.net","path":"choose[2]\\when[1]","policyId":"","clientRequestId":"01c054fe-0139-46bb-955c-9c153b67f083","dreeSet":"true"}}

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Business Process Flows

Attachmentisnotwo...

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Michael E. Gernaey 38,415 Super User 2025 Season 1 on at

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Attachment from form to planner isn't working

Hi @CU01041530-0

1) you did not mention that detail which would made the answer obvious :-) so please make sure to sure all relevant details hehe

2) I will say what I ask everyone (and I dont install peoples stuff on a zip), please share the flow in pictures.

What it sounds like to me and I am essentially 100% sure is, you are looping and adding attachments, but in your loop you are doing it incorrectly and accidentally attempting to attach the same attachment

That is the only reason it would give that error and why I said what I said. Not that I thought you were looping, simply that you were mistakenly trying to attach the same file multiple times.

please share some pictures of the inputs etc in your flow, and then if you look in your Flow Run that fails, I bet if you go through the Loop section (using the < > keys) and you look at what you are trying to attach, its the same thing.

But hey I have a delicious hat if I am wrong :-)

Fix that

You are good

If this helps resolve your issue Please mark as such and maybe a like too :-)

Thanks!
CU01041530-0 6 on at

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Attachment from form to planner isn't working

@Michael E. Gernaey, i tested it out that if i only attach one attachment then it will works. The moment someone attach more than one documents then i doesn't work and have that error. The documents name is different will that still affect it?
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Michael E. Gernaey 38,415 Super User 2025 Season 1 on at

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Attachment from form to planner isn't working

Hi @CU01041530-0

Are you verifying before hand that the attachment, with the exact same link (meaning location/name etc) doesn't already exist in the Task?

Also, can you verify if any retries happened. Doesn't look like it, but that would cause this too
creativeopinion 10,326 Super User 2025 Season 1 on at

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Attachment from form to planner isn't working

@CU01041530-0 You might be interested in this YT Tutorial:

How To Create a Planner Task from a Microsoft Form Submission

In this Power Automate tutorial, I’ll show you how to build a flow that creates tasks in Planner each time a MS form is submitted.

First, I’ll show you how to create a task using the Microsoft Form submission data. Then, I’ll show you how to place a task in a specific bucket based on a selection made in the form as well as how to assign tasks to specific users. At the end of the video I’ll show you how to handle Microsoft Form uploads and how you can attach those to your Planner Tasks.

If you’re looking for a way to quickly create tasks from a SharePoint list or an Excel table—I already have a tutorial on how to do that. Click here to check it out.

IN THIS VIDEO:
✓ How to automate creating Planner tasks from Microsoft Forms submissions
✓ How to differentiate between Group Forms and Personal Forms in Microsoft Forms
✓ How to build a flow to create tasks using Microsoft Forms data
✓ How to dynamically select a bucket in the Create a Task action
✓ How to add a task description to a Planner task
✓ How to use the List Buckets action in Power Automate
✓ How to use the Filter Array action to match form responses
✓ How to troubleshoot Filter Array action issues
✓ How to use the Condition action to handle bucket creation
✓ How to create a new bucket in Microsoft Planner automatically
✓ How to use variables to set the Bucket ID dynamically
✓ How to assign users to Planner tasks based on form responses
✓ How to add multiple users to a task using SharePoint or Excel data
✓ How to group actions using the Scope action in Power Automate
✓ How to add file attachments to Planner tasks from Microsoft Forms
✓ How to parse JSON output for file uploads in Power Automate
✓ How to handle empty file uploads in Power Automate
✓ How to replace the manual flow trigger with a form submission trigger

Hope this helps!

Consider giving me a ❤️ if you liked my response!

👉 Level up your Power Automate skills by checking out my tutorials on YouTube
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