Using response code and solving error

Dear Sir/Ma’am ,

I want to use response to be downloaded automatically and use that response to be uploaded in the next api test. So if there is any feature so that we can automate the testing for upload and download that will be very helpful of you.

and i have one more issue as one of my api requests was working earlier but now its not working as this request is working in postman and other api testers same body same request is not working in Katalon Studio. It is showing 400 bad request and there is nothing on console, so how will we know what is the problem?

Thanks in advance