return code
a.k.a. error messageOne of a variety of server messages you may see on your browser screen, it reports the return status of a Web page request and specifies whether the data transfer was successful or not (and why not).
Possible "Success" codes include the following:
200 = Success: OK
201 = Success: Created
202 = Success: Accepted
203 = Success: Partial Information
204 = Success: No Response
300 = Success: Redirected
301 = Success: Moved
302 = Success: Found
303 = Success: New Method
304 = Success: Not Modified
Possible "Failed" codes include the following:
400 = Failed: Bad Request
401 = Failed: Unauthorized
402 = Failed: Payment Required
403 = Failed: Forbidden
404 = Failed: Not Found
500 = Failed: Internal Error
501 = Failed: Not Implemented
502 = Failed: Overloaded Temporarily
503 = Failed: Gateway Timeout
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