Hi @Pavel_Soucek ,

The Excel files are binary formats. I think when you are using decodeBase64() on the file content, you might corrupting the file accidently. I think Power Automate already returns the binary data in a format suitable for sending in the body of an HTTP request.
Could you try replace your code with following?

@body('Get_file_Content')

Also, documentation of the endpoint you're using suggest to not encode anything, so let's try above approach.

I have tried it with tis error message:

Flow save failed with code 'OpenApiOperationParameterValidationFailed' and message 'Input parameter 'body' validation failed in workflow operation 'UploadFile': The parameter with value '"@body('Get_file_content')"' in path 'body' with type/format 'String/binary' is not convertible to type/format 'Object'.'.

Maybe i need to somehow define something in the connector, but I don't know what.

p.

Hi @Pavel_Soucek ,

It was long time ago since I worked with Power Automate, but I think you can edit connector. You can try to change schema to binary or byte

I can define header and body for "PUT". I add to header "content-type". Bud I am not sure how to define "body".