> ## Documentation Index
> Fetch the complete documentation index at: https://docs-staging-feat-sdk-reference-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> Use Auth0 Guardian error codes and descriptions to identify token, enrollment, push notification, SMS, and transaction errors.

# Guardian Error Code Reference

Use the error codes to display informative messages and to distinguish between recoverable and unrecoverable errors.

| Error Code | Description |
| - | - |
| `invalid_token` | Invalid request or transaction token |
| `insufficient_scope` | You don't have enought grants to perform the requested operation |
| `invalid_bearer_format` | The bearer put in authentication header was not valid |
| `enrollment_conflict` | There is another enrollment for the same user. You cannot enroll twice. |
| `tenant_not_found` | The tenant associated cannot be found. Should not normally happen at least that you delete the tenant |
| `login_transaction_not_found` | The mfa auth transaction is not active or has already expired |
| `error_sending_push_notification` | Push notification delivery failed |
| `push_notification_wrong_credentials` | Push notification delivery failed because of wrong credentials |
| `invalid_otp` | Provided otp code was not valid |
| `invalid_recovery_code` | Provided recovery code was not valid |
| `invalid_body` | Body validation failed. Bad request. |
| `invalid_query_string` | Query string validation failed. Bad request. |
| `enrollment_transaction_not_found` | The mfa enrollment transaction is not active or has expired |
| `invalid_phone_number` | The provided phone number is invalid |
| `error_sending_sms` | SMS Delivery error |
| `feature_disabled` | The requested feature is currently globally not available (contact the provider) |
| `feature_disabled_by_admin` | The requested feature is currently disabled by your admin |
| `pn_endpoint_disabled` | We were unable to deliver the push notification after retrying many times. Try removing you account for the device and adding it again. |
| `too_many_sms` | You have exeed the amount of SMSs assigned to your user |
| `too_many_pn` | You have exeed the amount of push notifications assigned to your user |
| `too_many_sms_per_tenant` | You have exeed the amount of SMSs assigned to your tenant |
| `too_many_pn_per_tenant` | You have exeed the amount of push notifications assigned to your tenant |
| `field_required` | A field is required to perform the operation (this errors has a field attribute with a code for the field: `otpCode`, `recoveryCode`) |
| `method_not_found` | You have requested a method that is currently not supported (should not happen) |
| `no_method_available` | There is currently no method to enroll (all of them are disabled) |
| `enrollment_method_disabled` | The specified enrollment method is disabled, this error has also a .method field |
| `auth_method_disabled` | The specified authentication method is disabled, this error has also a .method field |
| `invalid_otp_format` | OTP format validation error |
| `invalid_recovery_code_format` | Recovery code format validation error |
| `transaction_expired` | The transaction has already expired |
| `already_enrolled` | You are already enrolled, cannot enroll again |
| `not_enrolled` | You not enrolled. Must enroll first |
| `invalid_enrollment` | The enrollment provided to transaction#requestAuth method is not valid or is null/undefined |