Table of Contents
About
The HTTP
412 Precondition Failed client error response
status code
indicates that access to the target
resource
was denied; this happens
with conditional requests
on methods
other than GET
or HEAD
when the
condition defined by the If-Unmodified-Since
or If-Match
header
is not
fulfilled; in that case, the request (usually an upload
or a
modification
of a resource) cannot be made and this error response
is
sent back1.
Anki
Links
References
MDN. “412 Precondition Failed”. Available at: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/412 . (Accessed: ). ↩︎