# no_inverse

> This change recorded nothing to undo.

**Nothing to undo** · HTTP 422

## What it means

This change recorded nothing to undo.

## What to do

No action needed.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/no_inverse",
  "title": "Nothing to undo",
  "status": 422,
  "detail": "This change recorded nothing to undo.",
  "code": "no_inverse",
  "requestId": "req_…"
}
```

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