On success, the X-Success HTTP header has the value 1
while in case of failure it has the value 0. On success, the HTTP status
code will be the standard 200 OK. On error, an error message is present in
the X-Error-Message HTTP header. In case of failure, the
following HTTP status codes are returned :
This means that the authentication token is invalid. You will have to authenticate before calling the operation
In case something (e.g. table) is not found
There is some other error
Either the function call you are making is not allowed or you have exceeded the rate limit.
In addition, the following headers are present that can help in further debugging :
The last SQL statement executed
The name of the error class e.g. SQLException, NotFoundException, etc.