# Error Responses

Learn about the error response that is returned from FusionAuth APIs.

> For the index of this section of the site, see [llms.txt](https://4002.18-224-161-104.sslip.io/docs/llms.txt)

When FusionAuth encounters an error or finds validation errors in your request, an Errors object is returned in the response body. The Errors object is defined as follows, where **fieldName** indicates the field in the request body the message is describing and **\[x\]** indicates the value is part of an array of one or more values.

## Error Fields

`generalErrors`

*   Type: `Array`

The list of general error messages.

`generalErrors[x].code`

*   Type: `String`

The code of the error message.

`generalErrors[x].message`

*   Type: `String`

A descriptive error message that details the problem that occurred.

`fieldErrors`

*   Type: `Object`

The list of field error message.

`fieldErrors[fieldName]`

*   Type: `Array`

The list of error messages for that field

`fieldErrors[fieldName][x].code`

*   Type: `String`

The code of the error message.

`fieldErrors[fieldName][x].message`

*   Type: `String`

A descriptive error message that details the problem that occurred.

Example Errors JSON Object

```json
{
  "generalErrors": [
    {
      "code": "[invalid]",
      "message": "Your JSON was invalid"
    }
  ],
  "fieldErrors": {
    "user.username": [
      {
        "code": "[duplicate]user.username",
        "message": "A User with username = [neo] already exists."
      }
    ]
  }
}
```

Related

[APIs OAuth Error Reference OAuthError reference for FusionAuth OAuth2 endpoints. fusionauth apirest apierror response](https://4002.18-224-161-104.sslip.io/docs/apis/oauth/oauth-error.md)

[APIs User Action API Learn about the APIs for invoking a User Action on a User. fusionauth apirest api](https://4002.18-224-161-104.sslip.io/docs/apis/actioning-users.md)

[APIs Create an API Key API API documentation for the FusionAuth Create an API Key API. fusionauth apirest api](https://4002.18-224-161-104.sslip.io/docs/apis/api-keys/create-an-api-key.md)

[APIs Delete an API Key API API documentation for the FusionAuth Delete an API Key API. fusionauth apirest api](https://4002.18-224-161-104.sslip.io/docs/apis/api-keys/delete-an-api-key.md)
---

## Other pages in Apis

> For the full index of this section, see [Apis](https://4002.18-224-161-104.sslip.io/docs/llms-apis.txt).

- [User Action API](https://4002.18-224-161-104.sslip.io/docs/apis/actioning-users.md): Learn about the APIs for invoking a User Action on a User.
- [API Keys API](https://4002.18-224-161-104.sslip.io/docs/apis/api-keys.md): Learn about the APIs for creating, retrieving, updating and deleting API Keys.
- [Application API](https://4002.18-224-161-104.sslip.io/docs/apis/applications.md): Learn about the APIs for creating, retrieving, updating and deleting Applications.
- [Audit Log API](https://4002.18-224-161-104.sslip.io/docs/apis/audit-logs.md): Learn about the APIs for adding entries to, searching, and exporting the audit log.
- [Authenticate with our APIs](https://4002.18-224-161-104.sslip.io/docs/apis/authentication.md): Learn how the FusionAuth APIs authenticate requests.
- [CIMD Domain OAuth Scopes API](https://4002.18-224-161-104.sslip.io/docs/apis/cimd-domain-scopes.md): Learn about the APIs for creating, retrieving, updating and deleting the custom OAuth scopes of a CIMD domain.
- [CIMD Domain API](https://4002.18-224-161-104.sslip.io/docs/apis/cimd-domains.md): Learn about the APIs for creating, retrieving, updating and deleting CIMD domains.
- [Configure CORS](https://4002.18-224-161-104.sslip.io/docs/apis/configure-cors.md): How to set up and use the FusionAuth API Explorer.
- [Connector API](https://4002.18-224-161-104.sslip.io/docs/apis/connectors.md): Learn about the APIs for creating, retrieving, updating and deleting identity providers.
- [Consent API](https://4002.18-224-161-104.sslip.io/docs/apis/consents.md): Learn about the APIs for creating, retrieving, updating and deleting consents.
- [Email API](https://4002.18-224-161-104.sslip.io/docs/apis/emails.md): Learn about the APIs for creating, retrieving, updating and deleting email templates as well as sending emails to users.
- [Entity API](https://4002.18-224-161-104.sslip.io/docs/apis/entities.md): Learn about the APIs for creating, retrieving, updating and deleting entities and entity types.
- [Event Log API](https://4002.18-224-161-104.sslip.io/docs/apis/event-logs.md): Learn about the APIs for searching and retrieving event logs.
- [Family API](https://4002.18-224-161-104.sslip.io/docs/apis/families.md): Learn about the APIs for creating, retrieving, updating and deleting families.
- [Group API](https://4002.18-224-161-104.sslip.io/docs/apis/groups.md): Learn about the APIs for creating, retrieving, updating and deleting groups.
- [Hosted Backend API](https://4002.18-224-161-104.sslip.io/docs/apis/hosted-backend.md): Learn about the APIs that you to perform OAuth2 Authorization Code Flow login, logout, and refresh for applications.
- [Identity Provider API](https://4002.18-224-161-104.sslip.io/docs/apis/identity-providers.md): Learn about the APIs for creating, retrieving, updating and deleting identity providers.
- [Identity Verify API](https://4002.18-224-161-104.sslip.io/docs/apis/identity-verify.md): Learn about the APIs for starting, sending, and completing identity verification.
- [Integration API](https://4002.18-224-161-104.sslip.io/docs/apis/integrations.md): Learn about the APIs for retrieving and updating integrations.
- [IP Access Control List API](https://4002.18-224-161-104.sslip.io/docs/apis/ip-acl.md): Learn about the APIs for creating, retrieving, updating and deleting IP Access Control Lists.
- [JWTs & Refresh Token API](https://4002.18-224-161-104.sslip.io/docs/apis/jwt.md): Learn about the APIs that allow you to manage Refresh Tokens, verify Access Tokens and retrieve public keys used for verifying JWT signatures.
- [Key API](https://4002.18-224-161-104.sslip.io/docs/apis/keys.md): Learn about the APIs for generating, importing, retrieving, updating and deleting keys.
- [Lambda API](https://4002.18-224-161-104.sslip.io/docs/apis/lambdas.md): Learn about the APIs for creating, retrieving, updating and deleting lambdas.
- [Login API](https://4002.18-224-161-104.sslip.io/docs/apis/login.md): API documentation for the FusionAuth Login API.
- [Message Template API](https://4002.18-224-161-104.sslip.io/docs/apis/message-templates.md): Learn about the APIs for creating, retrieving, updating and deleting message templates.
- [Messenger API](https://4002.18-224-161-104.sslip.io/docs/apis/messengers.md): Learn about the APIs for creating, retrieving, updating and deleting messengers.
- [OAuth2 API](https://4002.18-224-161-104.sslip.io/docs/apis/oauth.md): This page details FusionAuth's OAuth2 endpoints. Learn about the Authorization Code grant, `Implicit` grant, and other OAuth2 grants.
- [OpenAPI Specification](https://4002.18-224-161-104.sslip.io/docs/apis/openapi.md): Learn about the FusionAuth OpenAPI Specification, which allows you to use OpenAPI tooling to interact with FusionAuth.
- [Passwordless API](https://4002.18-224-161-104.sslip.io/docs/apis/passwordless.md): Learn about the APIs for one-time password authentication.
- [Reactor API](https://4002.18-224-161-104.sslip.io/docs/apis/reactor.md): Learn about the APIs for activating, deactivating, and retrieving the status of a FusionAuth Reactor license.
- [User Registration API](https://4002.18-224-161-104.sslip.io/docs/apis/registrations.md): Learn about the APIs for creating, retrieving, updating and deleting User Registrations.
- [Report API](https://4002.18-224-161-104.sslip.io/docs/apis/reports.md): Learn about the APIs for retrieving reports from FusionAuth.
- [SCIM API](https://4002.18-224-161-104.sslip.io/docs/apis/scim.md): Learn about the APIs for provisioning SCIM Resources in FusionAuth using a SCIM Client.
- [OAuth Scopes API](https://4002.18-224-161-104.sslip.io/docs/apis/scopes.md): Learn about the APIs for creating, retrieving, updating and deleting OAuth scopes.
- [System API](https://4002.18-224-161-104.sslip.io/docs/apis/system.md): Learn about the APIs for retrieving and updating the system configuration.
- [Tenant Manager API](https://4002.18-224-161-104.sslip.io/docs/apis/tenant-manager.md): Learn about the APIs for retrieving and updating Tenant Manager configuration.
- [Tenants API](https://4002.18-224-161-104.sslip.io/docs/apis/tenants.md): Learn about the APIs for creating, retrieving, updating and deleting tenants.
- [Multi-Factor API](https://4002.18-224-161-104.sslip.io/docs/apis/two-factor.md): Learn about the APIs for enabling and disabling multi-factor authentication for users.
- [User Action Reason API](https://4002.18-224-161-104.sslip.io/docs/apis/user-action-reasons.md): Learn about the APIs for creating, retrieving, updating and deleting user action reasons.
- [Manage User Action API](https://4002.18-224-161-104.sslip.io/docs/apis/user-actions.md): Learn about the APIs for creating, retrieving, updating and deleting user actions.
- [User Comment API](https://4002.18-224-161-104.sslip.io/docs/apis/user-comments.md): Learn about the APIs for creating and retrieving comments on users.
- [User API](https://4002.18-224-161-104.sslip.io/docs/apis/users.md): Learn how to integrate with the FusionAuth User API. This documentation provides a comprehensive reference for managing users.
- [WebAuthn API](https://4002.18-224-161-104.sslip.io/docs/apis/webauthn.md): Learn about the APIs for starting and completing WebAuthn ceremonies and retrieving, importing and deleting WebAuthn passkeys.
- [Webhook Event Log API](https://4002.18-224-161-104.sslip.io/docs/apis/webhook-event-logs.md): Learn about the APIs for searching and retrieving webhook event and attempt logs.
- [Webhook API](https://4002.18-224-161-104.sslip.io/docs/apis/webhooks.md): Learn about the APIs for creating, retrieving, updating and deleting Webhooks.