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 "Roman" is an invalid value for this field?

[{requestedResource:"Roman"}] 

Should this be treated as 400 where "blah" field doesn't exist at all?

[{blah:"Roman"}]

Answer 1

First check the URL it might be wrong, if it is correct then check the request body which you are sending, the possible cause is request that you are sending is missing right syntax.

To elaborate , check for special characters in the request string. If it is (special char) being used this is the root cause of this error.

try copying the request and analyze each and every tags data.