POST request form data

I am wondering how to perform a POST request to this endpoint with a form data payload in Knime without using non-partner extensions (like Palladian).

In Postman, I’m performing this request with no additional headers aside from the default ones pre-computed by Postman itself

In Knime, the POST request node fails with

error 400: Invalid client

supposedly meaning that some error has to be in the client_id parameter, although it’s completely correct. Even curl does not pose this error, only Knime does.

At the moment I worked around this error by using a Python / Java snippet node, but I was wondering if there was a native solution to this.

The API has free registration if anyone wants to try it. During registration it asks for an affiliated company, but you can type anything.

KNIME_project.knwf