# RULE_PROFILE_INVALID

The rules profile attached to the run failed its own checks.

## What happened

The rules profile attached to this run failed its own checks and cannot be used. Before a run starts, the engine settles every setting it depends on, and a setting that cannot be settled ends the run with this code without testing anything. The engine's own text is in `detail.reason`.

## What to do

Choose a different rules profile, or fix the one that failed.

## Example

```json
{
  "status": "failed",
  "error": {
    "code": "RULE_PROFILE_INVALID",
    "message": "The engine refused this run's settings before it started.",
    "detail": {}
  }
}
```

The reply also carries `detail.reason`, left out of this sample.