> ## Documentation Index
> Fetch the complete documentation index at: https://docs.andteam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# precondition-failed

> The record changed since the ETag was read.

**Status 412.** The record changed since the ETag was read.

The response is `application/problem+json`, and its `type` is
`https://docs.andteam.com/api/problems/precondition-failed`:

```json theme={null}
{
  "type": "https://docs.andteam.com/api/problems/precondition-failed",
  "title": "The record changed since the ETag was read",
  "status": 412
}
```

## What it means

The record changed since you read its `ETag`. Nothing was written.

## What to do

Read the record again and apply your change to what it holds now. See [Retries and versions](https://docs.andteam.com/guides/idempotency.md).

See [Errors](https://docs.andteam.com/errors.md) for every type.


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