The HTTP
417 Expectation Failed client error response code indicates that the expectation given in the request's Expect header could not be met.See the
Expect header for more details.Status
417 Expectation Failed
Specifications
| Specification | Title |
|---|---|
| RFC 7231, section 6.5.14: 417 Expectation Failed | Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content |