> ## Documentation Index > Fetch the complete documentation index at: https://developer.runa.io/llms.txt > Use this file to discover all available pages before exploring further. # Error types > Error types and handling in the Runa API Our endpoints return standard HTTP status codes to indicate the success or failure of a request. In the event of an error, the response body will contain a JSON object with `type`, `message`, and `help` keys. For example: ```json theme={null} { "type": "example", "message": "This is an example error", "help": "This is how you can fix it" } ``` You can use the `type` key to programmatically handle different error scenarios. The `message` and `help` keys offer human readable descriptions of the error and may vary depending on the specific error. ## Error types The following is a list of error types that may be returned by our API. The message and help fields are examples and may vary depending on the specific error. | Type | HTTP Status | Message (example) | Help (example) | | --------------------------------------------------------------------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unauthorized` | `401` | Missing or invalid 'X-Api-Key' header. | Generate a key on [https://app.runa.io/api-keys](https://app.runa.io/api-keys) and pass using the 'X-Api-Key' header. | | `forbidden` | `403` | You don't have permission to access the requested resource | Please check the path you are trying to access is correct and you have permission to access it. Also ensure you are using the correct API key in the 'X-Api-Key' header. | | `bad_request` | `400` | There is a problem with your request payload or JSON format. | Please ensure your payload is being passed or check issues with a JSON validator. | | `invalid_api_key` | `401` | Missing or invalid 'X-Api-Key' header | Generate a key on [https://app.runa.io/api-keys](https://app.runa.io/api-keys) and pass using the 'X-Api-Key' header. | | `not_found` | `404` | The requested resource does not exist | The request path is likely incorrect, please check and try again. | | `timeout` | `504` | The request timed out | We were unable to process your request in time. This is a temporary issue, please try again. If the problem persists please contact [ordersupport@runa.io](mailto:ordersupport@runa.io) | | `internal_server_error` | `500` | An internal server error occurred | Please try again, or contact [ordersupport@runa.io](mailto:ordersupport@runa.io) for assistance. | | `invalid_version` | `400` | Invalid API version | Please use a valid API version. See [https://developer.runa.io/docs/api-versioning](https://developer.runa.io/docs/api-versioning) for more information. | | `version_removed` | `410` | API version is no longer supported and has been removed | The requested API version has been removed. See [https://developer.runa.io/docs/api-versioning](https://developer.runa.io/docs/api-versioning) for more information. | | `validation_error` | `422` | There was an issue with the request payload | Please check your request matches the structure outlined in our API documentation: [https://developer.runa.io/reference](https://developer.runa.io/reference) | | `pagination_error` | `400` | There was an issue with the pagination parameters | Please check the pagination parameters are valid and try again. | | `idempotency_validation_error` | `400` | Request payload does not match previous payload for this idempotency key. | Please use a new idempotency key if this is a new request, or check your payload has not changed if you're retrying a request. | | `idempotency_in_progress` | `400` | We are already processing an order for this idempotency key | Please wait until this order has finished processing before resending this request. | | `insufficient_funds` | `400` | Insufficient funds in {currency} balance to create order. | Please add more funds to your {currency} balance and try again. | | `product_validation_error` | `400` | Not allowed to order products: \ | None | | `currency_mismatch` | `400` | The currency requested in the payment\_method, '\', does not match the currency of the selected products, '\'. | When the payment\_method type is 'ACCOUNT\_BALANCE', the currency specified must be the same as the currency of all of the products in the order. | | `payment_method_unavailable` | `400` | The requested payment method is not available. | None | | `invalid_card_id`
 (deprecated) | `400` | Invalid card id. | The card id provided is invalid. Please verify the card id in your Runa account and try again. | | `currency_not_supported`
 (deprecated) | `400` | The currency of the requested products, '\', is not supported for card payments. | When the payment\_method type is 'CARD', the currency specified must be one of the following: ... | | `invalid_execution_mode` | `400` | Invalid execution mode. | None | | `ordering_restricted` | `403` | You cannot complete this order as you have reached your spending limit | We will send you an email with instructions with what to do next so you can continue to order as soon as possible. Please contact [compliance@runa.io](mailto:compliance@runa.io) if you do not get this. | | `insecure_protocol` | `400` | HTTPS required | For security the Runa API only supports requests over HTTPS. Please try again with an HTTPS URL. |