# output_contract

> The operation produced a response that breaks its own documented schema, so it was withheld.

**Internal error** · HTTP 500

## What it means

The operation produced a response that breaks its own documented schema, so it was withheld.

## What to do

Report the `requestId`; the operation needs a fix on our side.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/output_contract",
  "title": "Internal error",
  "status": 500,
  "detail": "The operation produced a response that breaks its own documented schema, so it was withheld.",
  "code": "output_contract",
  "requestId": "req_…"
}
```

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