# metadata_too_large

> A resource holds at most 50 metadata keys.

**Too much metadata** · HTTP 422

## What it means

A resource holds at most 50 metadata keys.

## What to do

Remove keys you no longer need (set them to null) before adding new ones.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/metadata_too_large",
  "title": "Too much metadata",
  "status": 422,
  "detail": "A resource holds at most 50 metadata keys.",
  "code": "metadata_too_large",
  "requestId": "req_…"
}
```

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