400 status code: The HTTP 400 Bad

The HTTP 400 Bad Request client error response status code indicates that the server would not process the request due to something the server considered to be a client error. What is '400 Bad Request'? Learn how to use and/or fix this HTTP status code, with free examples and code snippets. The HTTP specification intends this status code to be used for "limited-time, promotional services". APIs should not feel compelled to indicate resources that have been deleted with this status code. Learn what a 400 error means in REST API and how to handle it. See examples of invalid JSON, XML, headers, and other scenarios that trigger a 400 response.