# Trial Must Be Either Paid or Cardless

trial type conflict

---

## Example

```json
{
  "error": {
    "type": "request_error",
    "code": "trial_is_either_paid_or_cardless",
    "detail": "If a trial has a unit price amount, it must require a payment method.",
    "documentation_url": "https://developer.paddle.com/errors/prices/trial_is_either_paid_or_cardless"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}
```

## Details

| Attribute | Value |
| --- | --- |
| Status code | 400 |
| Error code | `trial_is_either_paid_or_cardless` |
| Error message | If a trial has a unit price amount, it must require a payment method. |

## Common causes

- A trial configuration sets a unit price amount and a requirement of payment method to false

## Common solutions

- Remove the unit price amount, to create a Cardless Trial
- Set the payment method requirement to true, to create a Paid Trial