type: object description: >- Lob uses RESTful HTTP response codes to indicate success or failure of an API request. In general, 2xx indicates success, 4xx indicate an input error, and 5xx indicates an error on Lob's end. required: - error properties: error: type: object required: - message - status_code - code properties: message: type: string description: A human-readable message with more details about the error example: Rate limit exceeded. Please wait 5 seconds and try your request again. status_code: $ref: "../attributes/failure_status_code.yml" code: type: string enum: - bad_request - conflict - feature_limit_reached - internal_server_error - invalid - not_deletable - not_found - request_timeout - service_unavailable - unrecognized_endpoint - unsupported_lob_version - address_length_exceeds_limit - bank_account_already_verified - bank_error - custom_envelope_inventory_depleted - deleted_bank_account - failed_deliverability_strictness - file_pages_below_min - file_pages_exceed_max - file_size_exceeds_limit - foreign_return_address - inconsistent_page_dimensions - invalid_bank_account - invalid_bank_account_verification - invalid_check_international - invalid_country_covid - invalid_file - invalid_file_dimensions - invalid_file_download_time - invalid_file_url - invalid_image_dpi - invalid_international_feature - invalid_perforation_return_envelope - invalid_template_html - merge_variable_required - merge_variable_whitespace - payment_method_unverified - pdf_encrypted - special_characters_restricted - unembedded_fonts - email_required - invalid_api_key - publishable_key_not_allowed - rate_limit_exceeded - unauthorized - unauthorized_token description: | A pre-defined string identifying an error. Error codes fall into three categories: **GENERIC** * `bad_request` - 422: an invalid request was made. See error message for details. * `conflict` - 409/422: this operation would leave data in a conflicted state. * `feature_limit_reached` - 403: the account has reached its resource limit and requires upgrading to add more. * `internal_server_error` - 500: an error has occured on Lob's servers. Please try request again. * `invalid` - 422: an invalid request was made. See error message for details. * `not_deletable` - 422: an attempt was made to delete a resource, but the resource cannot be deleted. * `not_found` - 404: the requested resource was not found. * `request_timeout` - 408: the request took too long. Please try again. * `service_unavailable` - 503: the Lob servers are temporarily unavailable. Please try agian. * `unrecognized_endpoint` - 404: the requested endpoint doesn't exist. * `unsupported_lob_version` - 422: an unsupported Lob API version was requested. **ADVANCED** * `address_length_exceeds_limit` - 422: the sum of to.address_line1 and to.address_line2 cannot surpass 50 characters. * `bank_account_already_verified` - 422: the bank account has already been verified. * `bank_error` - 422: there's an issue with the bank account. * `custom_envelope_inventory_depleted` - 422: custom envelope inventory is depleted, and more will need to be ordered. * `deleted_bank_account` - 404: checks cannot be created with a deleted bank account. * `failed_deliverability_strictness` - 422: the `to` address doesn't meet strictness requirements. See [Account Settings](https://dashboard.lob.com/#/settings/account) to configure strictness. * `file_pages_below_min` - 422: not enough pages. * `file_pages_exceed_max` - 422: too many pages. * `file_size_exceeds_limit` - 422: the file size is too large. See description for details. * `foreign_return_address` - 422: the `from` address must be a US address. * `inconsistent_page_dimensions` - 422: all pages of the input file must have the same dimensions. * `invalid_bank_account` - 422: the provided bank routing number is invalid. * `invalid_bank_account_verification` - 422: verification amounts do not match. * `invalid_check_international` - 422: checks cannot be sent internationally. * `invalid_country_covid` - 422: the postal service in the specified country is currently unable to process the request due to COVID-19 restrictions. * `invalid_file` - 422: the file is invalid. * `invalid_file_dimensions` - 422: file dimensions are incorrect for the selected mail type. * `invalid_file_download_time` - 422: file download from remote server took too long. * `invalid_file_url` - 422: the file URL when creating a resource is invalid. * `invalid_image_dpi` - 422: DPI must be at least 300. * `invalid_international_feature` - 422: the specified product cannot be sent to the destination. * `invalid_perforation_return_envelope` - 422: both `return_envelope` and `perforation` must be used together. * `invalid_template_html` - 422: the provided HTML is invalid. * `merge_variable_required` - 422: a required merge variable is missing. * `merge_variable_whitespace` - 422: merge variable names cannot contain whitespace. * `payment_method_unverified` - 401: you must have a verified bank account or credit card to submit live requests. * `pdf_encrypted` - 422: an encrypted PDF was provided. * `special_characters_restricted` - 422: cannot use special characters for merge variable names. * `unembedded_fonts` - 422: the provided PDF contains non-standard unembedded fonts. See description for details. **AUTHENTICATION** * `email_required` - 401: account must have a verified email address before creating live resources. * `invalid_api_key` - 401/403: the API key is invalid. * `publishable_key_not_allowed` - 403: the requested operation needs a secret key, not a publishable key. See [API Keys](#section/API-Keys) for more information. * `rate_limit_exceeded` - 429: requests were sent too quickly and must be slowed down. * `unauthorized` - 401: the request isn't authorized. * `unauthorized_token` - 401: token isn't authorized.