return code

a.k.a. error message

One 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

See also : client error  server error  403  404  
NetLingo Classification: Technical Terms

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