# Errors

The CKEditor Collaboration Server REST API uses standard HTTP response codes.

<a id="error-body">

## Error body

Each error has the following fields:

* `message` – It contains a short error description.
* `status_code` – It contains the response status.
* `trace_id` – It is a unique request identifier.
* `data` – It may contain various information and may have various structure depending on the endpoint.
* `explanation` – It contains an explanation why the particular error ocurred.
* `action` – In case some action can solve the problem it contains a description of what should be done.

<a id="example">

## Example

The presented error is an example which can occur while importing comments to a given document, but comments were already imported.

```json
{
  "message": "The target document already contains an import of the comments but it is based on a different snapshot.",
  "traceId": "e5abd738-db35-4372-b1de-cff9b48cc311",
  "statusCode": 409,
  "explanation": "A single target document cannot contain multiple imports of the same source.",
  "action": "Use a different target document ID.",
  "data": {
	"documentId": "doc-1",
	"importSnapshotAt": "2022-10-19T11:12:21.357Z"
  }
}
```

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Full index of the Cloud Services documentation: [llms.txt](../../../llms.txt)