> For the complete documentation index, see [llms.txt](https://docs.payengine.co/payengine-api-v2.5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payengine.co/payengine-api-v2.5/error-and-response-codes/error-codes.md).

# Error codes

| Error Messages                                                                                                             |
| -------------------------------------------------------------------------------------------------------------------------- |
| E101 - This endpoint is currently disabled                                                                                 |
| E102 - Email is already registered                                                                                         |
| E103 - Login token has been used                                                                                           |
| E104 - Plaid is not configured                                                                                             |
| E105 - Account not found                                                                                                   |
| E106 - Key has been revealed before                                                                                        |
| E107 - Transaction not found or invalid permissions                                                                        |
| E108 - Payment not found                                                                                                   |
| E109 - Transaction not found                                                                                               |
| E110 - Merchant not found                                                                                                  |
| E111 - Status not available for updating                                                                                   |
| E112 - Invalid status ${new status}                                                                                        |
| E113 - Only JPG, TIFF, PDF, DOC, DOCX, XLS, XLSX, TXT are allowed                                                          |
| E114 - This merchant doesn't allow to upload documents                                                                     |
| E115 - Document not found                                                                                                  |
| E116 - No authorization header provided                                                                                    |
| E117 - Invalid public key provided                                                                                         |
| E118 - Invalid HMAC signature. Learn more at <https://docs.payengine.co/merchant-onboarding/embedded-onboarding-ui>        |
| E119 - An HMAC signature is required. Learn more at <https://docs.payengine.co/merchant-onboarding/embedded-onboarding-ui> |
| E120 - Insufficient permission for accessing this route                                                                    |
| E121 - Invalid API key provided                                                                                            |
| E122 - Invalid API key type                                                                                                |
| E123 - Merchant need to sign before submitting                                                                             |
| E124 - Unable to transmit application. Please check validations first                                                      |
| E125 - Template not found                                                                                                  |
| E126 - Unable to create gateway                                                                                            |
| E127 - Could not find specific account                                                                                     |
| E128 - Bank account not found or does not belong to this user                                                              |
| E129 - Permission denied                                                                                                   |
| E130 - Plaid credentials are invalid for ${process.env.SYSTEM\_ENV} environment. Unable to save                            |
| E131 - Your Mailgun credentials are incorrect. Please check your sending API key or domain                                 |
| E131 - Unable to save. Error: {some reason})                                                                               |
| E132 - Mailgun setting not found                                                                                           |
| E133 - Unable to send. Response from Mailgun: {some reason})                                                               |
| E134 - Amount must be greater than zero                                                                                    |
| E135 - Card not found                                                                                                      |
| E136 - Card token expired                                                                                                  |
| E137 - Card token can not be used by this merchant                                                                         |
| E138 - Card token can not be used for this account                                                                         |
| E139 - Card type is not accepted                                                                                           |
| E140 - Bank account not found                                                                                              |
| E141 - Bank account token expired                                                                                          |
| E142 - Bank account token cant not be used by this merchant                                                                |
| E143 - Bank account token can not be used for this account                                                                 |
| E144 - Invalid transaction                                                                                                 |
| E145 - Payment method is not ${paymentMethod} // For example ACH or Credit Card                                            |
| E146 - Transaction doesn't have external ID                                                                                |
| E147 - Gateway information not found                                                                                       |
| E148 - Payment not found                                                                                                   |
| E149 - Refund amount can not be more than the balance amount                                                               |
| E150 - This payment can not be refunded                                                                                    |
| E151 - Merchant is not active                                                                                              |
| E152 - Capturing is not allowed before authorization                                                                       |
| E153 - Return not allowed                                                                                                  |
| E154 - Transaction not found                                                                                               |
| E155 - Card not found or does not belong to this user                                                                      |
| E156 - Unsupported API call. Please see API specifications at <https://docs-api.payengine.co/>                             |
| E157 - You must send browser info (browserInfo generated by PayEngine js library) when attempting 3DSecure                 |
| E158 - Uploading document is not allowed                                                                                   |
| E159 - Onboarding application failed validation                                                                            |
| E160 - No file was attached                                                                                                |
| E161 - Either a cardToken or deviceId field is required                                                                    |
| E162 - Must only include cardToken or deviceId fields, not both                                                            |
| E163 - attempt3DSecure field cannot be true when using deviceId field within the same payload                              |
| E164 - deviceId field is required                                                                                          |
| E165 - Credit is not enabled for this merchant                                                                             |
| E166 - additional\_data must be an object                                                                                  |
| E167 - This transaction was already captured                                                                               |
| E168 - Capture amount can not be more than the Auth amount                                                                 |
| E169 - Currency is not supported                                                                                           |
| E170 - Authorization not found                                                                                             |
| E171 - Order Number must be an alpha numeric 20 characters                                                                 |
| E172 - Payment link not found                                                                                              |
| E173 - Payment link has been paid already                                                                                  |
| E174 - Payment link has been cancelled already                                                                             |
| E175 - Payment link is expired                                                                                             |
| E176 - Subscription not found                                                                                              |