Showing results for 
Search instead for 
Did you mean: 

Working with multipart form data from HTTP trigger



I'm trying to create a Power Automate flow which takes a file from multipart form data received via an HTTP trigger and then creates this file within OneDrive or SharePoint.


I've found a few older tutorials online which have enabled me to get to the stage where I can access the multipart form data and convert the base64 encoded version of the file into binary. If I run my Power Automate flow with only these steps, then it runs successfully. However, as soon as I add an extra block to the flow to do anything, I get back an InvalidRequestContext error from the flow.


Here's the version of the flow which works:


Working version of Power Automate flowWorking version of Power Automate flow


The first Compose section has an expression of 'triggerMultipartBody(0)'. The second Compose section has an expression of '

At this point, I add a step to create a file in OneDrive using a dummy file name and the output of the second Compose section.
Screenshot of non-working Power Automate flowScreenshot of non-working Power Automate flow


The error I receive from this is:


"error": {
"code": "InvalidRequestContent",
"message": "The input body for trigger 'manual' of type 'Request' must be of type JSON, but was of type 'multipart/form-data; boundary=--------------------------190915140118851309356544'."
I receive this same error message even if I try to create a static file without accessing the output of the second Compose section.
I've got a dummy JSON schema in the HTTP request, but the flow generates the same errors with or without this. In terms of the request, I'm sending it from Postman with a 'form-data' body which contains a single PNG file, and haven't changed anything else in Postman other than pasting in the HTTP trigger URL and selecting 'POST' as the HTTP method.
Would anybody know what's happening here?

Hey there!


Just curious if you ever got this to work. I am running into a similar issue.




I had the same problem.

What is more - if I delete the creation of file step - flow run with success.

The solution for me was to call child flow (thru HTTP request) with step to create file.


The main reason for the error you get is that trigger "When a HTTP request is received" cannot receive any type but application/json. So in trigger leave JSON Schema empty.




The child flow:




Not applicable

I'm having the same issue. Can you export the flow? I'm not quit understanding where to put the child flow?

The main flow which I trigger from the button is very simple:Untitled.png

The last step is to send a request to child flow.

In URI you should specify the URI from the trigger of the child flow.

The Body:

"content": "@{triggerMultipartBody(0)['$content']}"

Not applicable

Update: Eliz you're a genius! It worked , all the kudos to you!

Hi I can't get this to work. Can you please look over to help?

I am getting a mismatch type error for string and object. This is how my http call to child looks.


Child flow:




Can you look over the issue that i am still having with this?  I feel like i have tried to duplicate but still getting a type mismatch error from the child flow. 

Hi @kmin !

It looks like you forgot to add curly brackets in the body when calling a child flow :




Hi, I did forget the brackets but added it in but gets the same error message below. I am triggering this from postman using an .jpg file in the body. The JSON schema in the child i copied from this post. If i change the 'object' to 'string' there, i get over this error but fails in 1st in the child.


"The input body for trigger 'manual' of type 'Request' did not match its schema definition. Error details: 'Invalid type. Expected String but got Object.'. "


I have the same issue! With empty JSON Schema, I am getting "

The input body for trigger 'manual' of type 'Request' must be of type JSON, but was of type 'multipart/form-data;", I am trying exactly as shown
With .pdf file
Frequent Visitor

Hello All,


So we are able to fix this eventually and get the multipart form data, by getting the form details and the attached file.


See the screenshot below for details.




Get JSON Data Base 64



Decode JSON Data Base 64





Get File from Multipart form data



Convert the Base64 file to Binary



== Then pass the content output in the SharePoint Add attachment card.


So, this way, we are able to get the form data as well as get the attached file in the form data.







Hi AY.


Can you share the rest of the sample JSON file? I want to use correct key value pairs to handle files on Json Format, and the screenshot you have only include until phonenumber.


All the best...

The following post might help you. I have written this after wasting much time on file uploading to SharePoint.

Upload a file to SharePoint document library using Power automate Flow


Resolver II
Resolver II

I also had that same error. My flow is running smoothly and then suddenly I am having that error.

You can fix it by just deleting the schema body of the trigger.

Thanks for sharing the video

Helpful resources


Community will be READ ONLY July 16th, 5p PDT -July 22nd

Dear Community Members,   We'd like to let you know of an upcoming change to the community platform: starting July 16th, the platform will transition to a READ ONLY mode until July 22nd.   During this period, members will not be able to Kudo, Comment, or Reply to any posts.   On July 22nd, please be on the lookout for a message sent to the email address registered on your community profile. This email is crucial as it will contain your unique code and link to register for the new platform encompassing all of the communities.   What to Expect in the New Community: A more unified experience where all products, including Power Apps, Power Automate, Copilot Studio, and Power Pages, will be accessible from one community.Community Blogs that you can syndicate and link to for automatic updates. We appreciate your understanding and cooperation during this transition. Stay tuned for the exciting new features and a seamless community experience ahead!

Check Out | 2024 Release Wave 2 Plans for Microsoft Dynamics 365 and Microsoft Power Platform

On July 16, 2024, we published the 2024 release wave 2 plans for Microsoft Dynamics 365 and Microsoft Power Platform. These plans are a compilation of the new capabilities planned to be released between October 2024 to March 2025. This release introduces a wealth of new features designed to enhance customer understanding and improve overall user experience, showcasing our dedication to driving digital transformation for our customers and partners.    The upcoming wave is centered around utilizing advanced AI and Microsoft Copilot technologies to enhance user productivity and streamline operations across diverse business applications. These enhancements include intelligent automation, AI-powered insights, and immersive user experiences that are designed to break down barriers between data, insights, and individuals. Watch a summary of the release highlights.    Discover the latest features that empower organizations to operate more efficiently and adaptively. From AI-driven sales insights and customer service enhancements to predictive analytics in supply chain management and autonomous financial processes, the new capabilities enable businesses to proactively address challenges and capitalize on opportunities.    

Summer of Solutions | Week 3 Results | Win free tickets to the Power Platform Conference

We are excited to announce the Summer of Solutions Challenge!    This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**   Week 1 Results: Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Community MembersNumber SolutionsSuper UsersNumber Solutions Deenuji 9 @NathanAlvares24  17 @Anil_g  7 @ManishSolanki  13 @eetuRobo  5 @David_MA  10 @VishnuReddy1997  5 @SpongYe  9JhonatanOB19932 (tie) @Nived_Nambiar  8 @maltie  2 (tie)   @PA-Noob  2 (tie)   @LukeMcG  2 (tie)   @tgut03  2 (tie)       Week 2 Results: Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 2: Community MembersSolutionsSuper UsersSolutionsPower Automate  @Deenuji  12@ManishSolanki 19 @Anil_g  10 @NathanAlvares24  17 @VishnuReddy1997  6 @Expiscornovus  10 @Tjan  5 @Nived_Nambiar  10 @eetuRobo  3 @SudeepGhatakNZ 8     Week 3 Results: Congratulations to the Week 3 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 3:Community MembersSolutionsSuper UsersSolutionsPower Automate Deenuji32ManishSolanki55VishnuReddy199724NathanAlvares2444Anil_g22SudeepGhatakNZ40eetuRobo18Nived_Nambiar28Tjan8David_MA22  

Updates to Transitions in the Power Platform Communities

We're embarking on a journey to enhance your experience by transitioning to a new community platform. Our team has been diligently working to create a fresh community site, leveraging the very Dynamics 365 and Power Platform tools our community advocates for.  We started this journey with transitioning Copilot Studio forums and blogs in June. The move marks the beginning of a new chapter, and we're eager for you to be a part of it. The rest of the Power Platform product sites will be moving over this summer.   Stay tuned for more updates as we get closer to the launch. We can't wait to welcome you to our new community space, designed with you in mind. Let's connect, learn, and grow together.   Here's to new beginnings and endless possibilities!   If you have any questions, observations or concerns throughout this process please go to   To stay up to date on the latest details of this migration and other important Community updates subscribe to our News and Announcements forums: Copilot Studio, Power Apps, Power Automate, Power Pages

Users online (3,638)