# SY30033: Phone `$phone` is not a number

Source: https://developer.synup.com/errors/sy30033

Documented under Review Campaigns.

```json
{
  "data": null,
  "errors": [
    {
      "message": "Phone `$phone` is not a number",
      "context": {},
      "code": "SY30033"
    }
  ]
}
```