2015-11-06 21:39:33 +01:00
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---
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set: 4
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code: 412
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title: Precondition Failed
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2015-11-07 05:34:40 +01:00
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references:
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"Rails HTTP Status Symbol": ":precondition_failed"
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2015-11-06 21:39:33 +01:00
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---
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2015-11-07 06:45:46 +01:00
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The 412 Precondition Failed status code indicates that one or more conditions
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2015-11-07 05:34:40 +01:00
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given in the request header fields evaluated to false when tested on the server.
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2015-11-07 06:45:46 +01:00
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2015-11-07 05:34:40 +01:00
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This response code allows the client to place preconditions on the current
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resource state (its current representations and metadata) and, thus, prevent the
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request method from being applied if the target resource is in an unexpected
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state.
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Source: [RFC7232 Section 4.2][1]
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[1]: <http://tools.ietf.org/html/rfc7232#section-4.2>
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