424 Failed Dependency

WebDAV: the request failed because a request it depended on failed.

424 at a glance

Code: 424
Name: Failed Dependency
Class: 4xx Client error
Status: IANA-registered standard code
Defined in: RFC 4918, Section 11.4
Cacheable by default: No by default. Caches store it only when the response carries explicit freshness (Cache-Control max-age, s-maxage or Expires).

What 424 means

424 Failed Dependency (RFC 4918) appears when an operation is part of a set: for example a PROPPATCH that changes several properties is atomic, so if one fails, the others report 424. It mostly shows up inside 207 Multi-Status bodies.

What typically causes a 424

WebDAV PROPPATCH with one invalid property.
Some APIs reuse it when a call to a dependent service failed.

Fix it on the server

Report the root-cause failure on the element that actually failed; use 424 for the others.

Fix it as a client or visitor

Find the entry in the response that has the real error and fix that one.

Example response

<d:propstat><d:prop><d:displayname/></d:prop><d:status>HTTP/1.1 424 Failed Dependency</d:status></d:propstat>