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"BadRequest. Http request failed as the content was not valid" in Power Automate

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Posted on by SC-30072038-0

I received an error message stating "BadRequest. HTTP request failed due to invalid content: 'Unable to translate bytes [E1] at index 81 from the specified code page to Unicode.'". This error occurred when I made an HTTP request to a customized API. The issue is related to the presence of the character "ç" at index 81 in the API response. Despite my attempts to set the "Content-Type" header to "application/json;charset=UTF-8", the problem persists. Are there any known workarounds for this issue?

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SC-30072038-0 on at

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Re: "BadRequest. Http request failed as the content was not valid" in Power Automate

The character "ç" is in the API's response because it naturally appears there. I sent a JSON request to the API, and it sent back this response:

jsonCopy code
{ "success": false, "codcliente": "000001", "msg": "AJUDA:REGBLOQ Este registro está bloqueado para uso. SB1-Descrição Genérica do Produto" }

I can't change how the API responds, and right now, it seems I can't even replace the caracthere because it does not process in the output of the action:
Michael E. Gernaey 43,515 Super User 2025 Season 1 on at

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Re: "BadRequest. Http request failed as the content was not valid" in Power Automate

I would use a compose and replace or remove that character and then use the output of the compose as your body.

Do you know how that character got there? just wondered if it could be stopped earlier. But above is how I would do it.

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Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey