What is “406-Not Acceptable Response” in HTTP?

Question

In my Ruby on Rails application I tried to upload an image through the POSTMAN REST client in Base64 format. When I POST the image I am getting a 406 Not Acceptable Resp

Answer 1

In my case for a API in .NET-Core, the api is set to work with XML (by default is set to response with JSON), so I add this annotation in my Controller :

[Produces("application/xml")]
public class MyController : ControllerBase {...}

Thank you for putting me on the path !