# external_id_taken

> Another live catalog entry already has this external id.

**External id taken** · HTTP 409

## What it means

Another live catalog entry already has this external id.

## What to do

Use a different external id, or update the entry that has it.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/external_id_taken",
  "title": "External id taken",
  "status": 409,
  "detail": "Another live catalog entry already has this external id.",
  "code": "external_id_taken",
  "requestId": "req_…"
}
```

How to read any error: [Errors guide](https://api.bymundi.com/docs/guides/errors.md).