# SY30034: Email `$email` has already been taken

Source: https://developer.synup.com/errors/sy30034

Documented under Review Campaigns.

```json
{
  "data": null,
  "errors": [
    {
      "message": "Email `$email` has already been taken",
      "context": {},
      "code": "SY30034"
    }
  ]
}
```