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Send Sharepoint file content to Child flow

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Posted on by Angela23

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Hello experts

I am trying to send my file content from sharepoint to a child flow and create a file from child flow but I get errors all the time.
This is my Parent flow:

and this is my child flow:

Error:

your help will be appreciate a lot.
Regards
Angela

@Pstork1

Categories:

Building flows

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Michael E. Gernaey 53,685 Super User 2025 Season 2 on at

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Hi

How come you are converting to Base64?

You are doing it as you pass it to the Child and within the child.
Have you tried doing it without converting as you pass it?

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Pstork1 68,858 Most Valuable Professional on at

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Files are sent between flows as Text encoded JSON records. But what file are you trying to send? You are using an Item trigger. Items can have 0, 1, or more attachments. So what file content are you trying to send? That will determine the dynamic content you want to send, but it probably won't be Body and it definitely won't be using Base64toBinary. When I get a few minutes I'll put together a quick sample with screenshots.

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Michael E. Gernaey 53,685 Super User 2025 Season 2 on at

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It is actually the Body.

Specifically in his case its body('Get_file_content'), thats why I wondered why he was converting it to Base64

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Pstork1 68,858 Most Valuable Professional on at

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Here's a working set of screenshots based on when a file is created in a library.

Parent Flow

Child Flow Trigger

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Angela23 114 on at

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Thank you for your answers @FLMike and @Pstork1
My file can be a Word or Pdf document.
Here I try to do As @Pstork1 demonstrated:
But I get this error:

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Pstork1 68,858 Most Valuable Professional on at

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As I mentioned earlier, are you triggering this on a list or a library? If you look at my screenshot you can see its triggered on a file creation not an item creation. How are you getting the file content based on the item trigger since that doesn't include the file identifier.

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Angela23 114 on at

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you are right @Pstork1 . I have a Document library and I need a trigger for my file, so *'ve changed it but still get this error:

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Pstork1 68,858 Most Valuable Professional on at

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When you hover over the file content what does the JSON look like?

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Angela23 114 on at

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@Pstork1
when I hover over the body: body('Get_file_content')
But the JSON is very long:
Do you want me to download it for you? its more than 60.000 characters

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Verified answer

Michael E. Gernaey 53,685 Super User 2025 Season 2 on at

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@Angela23

Please change the File Content (from the Run a Child flow), to this expression
body('Get_file_content')['$content']

Cheers
If you like my answer, please Mark it as Resolved, and give it a thumbs up, so it can help others
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey

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