400 BAD request HTTP error code meaning?

Question

I have a JSON request which I\'m posting to a HTTP URL.

Should this be treated as 400 where requestedResource field exists but \"Rom

Answer 1

Think about expectations.

As a client app, you expect to know if something goes wrong on the server side. If the server needs to throw an error when blah is missing or the requestedResource value is incorrect than a 400 error would be appropriate.