Error code

Version conflict

The resource changed after you read it: the version in your `If-Match` header is no longer its current one.

Fig. 03 Ratchet and pawlThe wheel turns freely one way, and the pawl stops it turning back.

Code: VERSION_CONFLICT
Management API: 412

What to do

Read it again, apply your change to what is there now, and send it with the new ETag.

The response

Every refusal is an application/problem+json document. Its detail says what went wrong in that request; its type is this page.

{
  "code": "VERSION_CONFLICT",
  "type": "https://coho-cms.com/errors/version-conflict",
  "title": "Version conflict",
  "status": 412,
  "detail": "What went wrong in this request, in a sentence.",
  "instance": "/v1/projects/…"
}

Every code

The error codes, in a table with a filter.