Issues Sending a PDF File to an API Using PowerAutomate

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Posted on by MettyNitram

Hello everyone,

I want to send my PDF file to an API using PowerAutomate.
However, I can't get it to work.

Here is the documentation for it:

https://docs.ninox.com/en/api/private-cloud-apis#upload-a-single-file-with-post](https://docs.ninox.com/en/api/private-cloud-apis#upload-a-single-file-with-post

Here is the cURL command from the documentation.

curl https://anastasiya.ninoxdb.de/v1/teams/u14mwnoutm14yrcnf/databases/pnum1qq8tpao/tables/B/records/5/files
-X POST
-H "Authorization": "Bearer e66e5190-14ad-11ec-aa6f-3502731d486c"
-H "Content-Type": "multipart/form-data"
-F 'file=@"/Users/anastasiya/Downloads/iStock-184877012.jpeg"'

Here is my PowerAutomate error and my code.
What am I doing wrong?

[
{
"message": "Unexpected token : in JSON at position 78"
}
]

P.S. I can do it with Visual Studio Code, just not with PowerAutomate.

Translated with ChatGPT 😉

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v-yueyun-msft Microsoft Employee on at

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Hi , @MettyNitram

According to your description, you need to check your http body is correct in your side. You need to use the multipart/form-data type.

And for more information, you can refer to this similar cases:
Solved: HTTP POST files with multipart/form-data - Power Platform Community (microsoft.com)

Solved: Send file with HTTP Rest - Power Platform Community (microsoft.com)

Best Regards,

Yueyun Zhang

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MettyNitram 18 on at

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Thank you, that was very helpful. I was also able to recreate it in my FLOW using the video https://www.youtube.com/watch?v=6BZAO1r0Ucc. It was a bit challenging to find the correct syntax, but I managed to do it. Thanks.

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MettyNitram 18 on at

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This BODY was needed:

{ "$content-type": "multipart/form-data; boundary=--------------------------810335688172264482525643", "$multipart": [ { "headers": { "Content-Disposition": "form-data; name=\"ZB1 Scan\"; filename=\"@{outputs('Dateimetadaten_abrufen')?['body/Name']}\"", "Content-Type": "application/pdf", "Content-Length": "" }, "body": { "$content-type": "application/pdf", "$content": "@{body('Dateiinhalt_über_Pfad_abrufen')?['$content']}" } }, { "headers": { "Content-Disposition": "form-data; name=\"threshold\"", "Content-Length": "4" }, "body": { "$content-type": "application/octet-stream", "$content": "MC43NQ==" } } ] }

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MettyNitram 18 on at

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Hello everyone, I have another question.
How can I post this file into a specific field in the NINOX database? Here is the API description: https://docs.ninox.com/en/api/private-cloud-apis#upload-a-single-file-with-post
With Postman, it works like this:

But how can I do this with Power Automate to address the "fieldId" : "A"?

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