# expert_advisor_not_supported

The file places trades, so it is an Expert Advisor and not an indicator.

## What happened

Only indicators can be converted. A file that the scan identifies as an Expert Advisor is refused with 400, and the reply lists the places that gave it away in `markers`.

## What to do

Convert the indicator that the Expert Advisor uses, and write the trading rules as a Forge strategy.

## Example

```json
{
  "error": "This file places trades (an Expert Advisor) \u2014 only indicators can be converted.",
  "code": "expert_advisor_not_supported"
}
```

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