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

# Subscription intent public error

When a subscription intent fails, the `public_error` attribute on the [Subscription Intent object](/api/direct-debit-legacy/subscriptions-intents/subscription-intent-object) identifies the cause.

Fintoc uses the following `public_error` values. Handle unknown values because Fintoc can add new errors.

| `public_error`                | Description                                                                    |
| :---------------------------- | :----------------------------------------------------------------------------- |
| `account_type_not_permitted`  | The selected account type is not allowed for this enrollment.                  |
| `authorization_timeout`       | Your customer did not authorize the direct debit enrollment in time.           |
| `bank_connection_error`       | Fintoc had a problem connecting with the selected bank.                        |
| `bank_not_available`          | The selected bank is temporarily unavailable.                                  |
| `internal_error`              | An unexpected error occurred while processing the enrollment.                  |
| `login_credentials_locked`    | The bank locked your customer's credentials after too many failed attempts.    |
| `login_invalid_credentials`   | The bank credentials your customer entered are incorrect.                      |
| `mfa_authorization_timeout`   | Your customer did not complete the bank's multi-factor authentication in time. |
| `mfa_unavailable`             | The bank's multi-factor authentication is not available for your customer.     |
| `password_change_required`    | The bank requires your customer to change their password before continuing.    |
| `request_timeout`             | The request to the bank timed out.                                             |
| `subscription_intent_expired` | The subscription intent expired before your customer completed the enrollment. |
| `user_left`                   | Your customer left the widget before completing the enrollment.                |