400 BAD request HTTP error code meaning? - Stack …
https://stackoverflow.com/questions/19671317/400-bad-request-http-error-code-meaning
Oct 29, 2013 · 400 means the server didn't understand. 200 means the server understood exactly and fully processed the request. When a server returns 200 it is saying, "I understood what you are asking for, I processed it without unexpected errors, and here is my proper response" 200 means you can trust the answer sent in the response.
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