This topic lists common error codes of the synthetic monitoring feature and their descriptions.

Error code Short description
300 HTTP/1.1 300 Multiple Choices
301 HTTP/1.1 301 Moved Permanently
303 HTTP/1.1 303 See Other
305 HTTP/1.1 305 Use Proxy
400 HTTP/1.1 400 Bad Request
401 HTTP/1.1 401 Unauthorized
402 HTTP/1.1 402 Payment Required
403 HTTP/1.1 403 Forbidden
404 HTTP/1.1 404 Not Found
405 HTTP/1.1 405 Method Not Allowed
406 HTTP/1.1 406 Not Acceptable
407 HTTP/1.1 407 Proxy Authentication Required
408 HTTP/1.1 408 Request Time-out
409 HTTP/1.1 409 Conflict
410 HTTP/1.1 410 Gone
411 HTTP/1.1 411 Length Required
412 HTTP/1.1 412 Precondition Failed
414 HTTP/1.1 414 Request-URI Too Large
415 HTTP/1.1 415 Unsupported Media Type
416 HTTP/1.1 416 Requested range not satisfiable
417 HTTP/1.1 417 Expectation Failed
500 HTTP/1.1 500 Internal Server Error
501 HTTP/1.1 501 Not Implemented
502 HTTP/1.1 502 Bad Gateway
503 HTTP/1.1 503 Service Unavailable
504 HTTP/1.1 504 Gateway Time-out
505 HTTP/1.1 505 HTTP Version Not Supported
534 Policy requires SSL