What does HTTP status code 400 indicate?

What does HTTP status code 400 indicate?

• A. OK - The request was successful
• B. Created - The resource was created
• C. Bad Request - The request is either wrong or missing information
• D. Not Found - The requested resource does not exist

Answer: (C)

400 indicates a client-side error: the server cannot process the request because the request is malformed or missing information. This means the issue lies with what the client sent, not with the server’s ability to handle it. Common scenarios include malformed JSON or XML in the body, missing required parameters, invalid parameter values, or an incorrect Content-Type header. The server returns this status to signal that correcting the request should resolve the issue. This differs from success codes like 200 or 201, and from not-found or server-error codes like 404 or 500. When troubleshooting, check the request syntax, ensure all required fields and proper data types are present, and verify headers and content types.

400 indicates a client-side error: the server cannot process the request because the request is malformed or missing information. This means the issue lies with what the client sent, not with the server’s ability to handle it. Common scenarios include malformed JSON or XML in the body, missing required parameters, invalid parameter values, or an incorrect Content-Type header. The server returns this status to signal that correcting the request should resolve the issue. This differs from success codes like 200 or 201, and from not-found or server-error codes like 404 or 500. When troubleshooting, check the request syntax, ensure all required fields and proper data types are present, and verify headers and content types.