> ## Documentation Index
> Fetch the complete documentation index at: https://docs.guile.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment Method Not Set

> The appointment does not have a payment method to authorize

## Cause

The appointment does not have a payment method that can be authorized.

## Fix

Add or choose a payment method before authorizing the appointment payment.

## Retry safety

Not retryable until the underlying state or request changes.

## Raised by

These operations can return this problem:

* [Create an appointment](/api-reference/appointments/create-an-appointment)
* [Authorize an appointment payment](/api-reference/appointments/authorize-an-appointment-payment)
* [Confirm a booking request](/api-reference/appointments/confirm-a-booking-request)

## Example

```json theme={null}
{
  "type": "https://docs.guile.app/problems/paymentMethodNotSet",
  "title": "Payment Method Not Set",
  "status": 422,
  "detail": "The appointment does not have a payment method that can be authorized."
}
```