Assistance with Sending Files from PVA Topics to Power Automate or via HTTP Request

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Posted on by AM-09121225-0

Hello,

I am seeking guidance on how to transfer files from a Power Virtual Agents (PVA) topic to a Power Automate flow or through an HTTP request.

Specifically, I’d like to understand the steps required to:

Pass that file as an input to a Power Automate flow for processing.
If applicable, use an outbound HTTP request from PVA (or Power Automate) to send the file to an external service.

I have tried using the System.Activity.Attachments formula to retrieve the file from Microsoft Teams. This formula returns a table, and when I print it, I get something like:

However, I am unable to send the file to Power Automate because it does not support sending file types or records, only integers, strings, and booleans.

Could you please provide instructions, including which connectors or actions to use, as well as best practices for implementing this scenario ?

Thank you in advance for your assistance.

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Topic creation & management

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SaiRT14 1,990 Super User 2025 Season 1 on at

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Transferring files from Power Virtual Agents (PVA) to a Power Automate flow or via an HTTP request requires careful handling because PVA doesn’t natively support file-type variables.

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AM-09121225-0 7 on at

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Hello,
Thank you for your previous response. I appreciate your clarification regarding the handling of file-type variables within PVA. Based on what you mentioned, it appears that some form of transformation, such as base64 encoding, is required before sending the file to Power Automate or via an HTTP request. Could you please advise on how to achieve base64 encoding for the file directly in PVA, or suggest alternative approaches or formulas that could be used to convert the file into a supported format (for example, text) before sending it on to a Power Automate flow or an HTTP endpoint ?
Thank you in advance for your assistance.

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