400 Bad Request

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This error indicates the user client has made a request that the server is unable to process. Types of requests that may produce this error can include:
any malformed syntax
deceptive routing
invalid requests (requesting actions that the server cannot complete)
The user should not repeat the request without modifying the request.

If you see this error you should first verify that the requested action is correct and is not missing any data. More troubleshooting may require seeking help from appropriate support resources.

The HyperText Transfer Protocol (HTTP) 400 Bad Request response status code indicates that the server cannot or will not process the request due to something that is perceived to be a client error (for example, malformed request syntax, invalid request message framing, or deceptive request routing).



400 Bad Request


RFC 7231, section 6.5.1: 400 Bad RequestHypertext Transfer Protocol (HTTP/1.1): Semantics and Content