# invalid_content

> Some content fields are not fields of this kind of entry, or their values do not validate.

**Invalid content** · HTTP 400 or 422

## What it means

Some content fields are not fields of this kind of entry, or their values do not validate.

## What to do

Read one entry of the same kind to see its fields, and send only those.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/invalid_content",
  "title": "Invalid content",
  "status": 400,
  "detail": "Some content fields are not fields of this kind of entry, or their values do not validate.",
  "code": "invalid_content",
  "requestId": "req_…"
}
```

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