Excel template upload using api

[P932733]

Hello!

I am getting an error message when I am trying to use api for get

/expense/excel

I requested excel template using url /core/api/v1/rest/expense/excel

it was downloaded, than I am trying to upload with api post.

I moved into body area line 1 file and post . It was completed with status 400.

I am getting message

{ "error": "format_not_recognized", "referenceId": "6cae1a44-6604-41bf-aced-026c6b2da451", "description": "No appropriate strategy found to parse the given input stream." }

Can I get more information about format of file

Thank you