# SEED_REQUIRED

Random slippage is on without a fixed seed, so the result could not be repeated.

## What happened

This run turns on random slippage without a fixed seed, so its result could not be reproduced. 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

Set a seed for the run, or turn random slippage off.

## Example

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

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