# VERSION_CONFLICT: Version conflict

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

Sent by the management API (412). The page: https://coho-cms.com/errors/version-conflict/

## What to do

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

## The response

```json
{
  "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 error code: https://coho-cms.com/errors/