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

# Errors

> Pier uses HTTP codes to indicate the status of an API request.

Generally, `2xx` indicates success, `4xx` indicates something was wrong with the information provided, and `5xx` indicates something went wrong on Pier's servers.

## Attributes

```jsx
{
    "error_type": "BORROWER_ERROR",
    "error_code": "INVALID_INPUT",
    "error_message": "A value provided in the body is incorrect. See error_detail for more",
    "error_detail": [
        {
            "value": "12708921",
            "msg": "EIN must be 9 digits",
            "param": "ein",
            "location": "body"
        }
    ]
}
```

## Error Codes

| **error\_code**                    | **error\_type**         | **status** | **error\_message**                                                                   |
| ---------------------------------- | ----------------------- | ---------- | ------------------------------------------------------------------------------------ |
| `UNAUTHORIZED`                     | `INVALID_REQUEST_ERROR` | `401`      | The API key is invalid. Make sure your API key is being prefixed with a colon        |
| `UNSUPPORTED_OFFER_TERMS`          | `APPLICATION_ERROR`     | `400`      | The requested offer terms are not supported for this state                           |
| `STATE_NOT_SUPPORTED`              | `APPLICATION_ERROR`     | `400`      | The applicant's state or territory is not supported                                  |
| `LOAN_AGREEMENT_CREATION_FAILED`   | `LOAN_AGREEMENT_ERROR`  | `400`      | The loan agreement could not be created. Please retry                                |
| `LOAN_AGREEMENT_CANNOT_BE_SIGNED`  | `LOAN_AGREEMENT_ERROR`  | `400`      | The loan agreement’s status must be pending in order to sign it                      |
| `LOAN_AGREEMENT_CANNOT_BE_CREATED` | `LOAN_AGREEMENT_ERROR`  | `400`      | Can only create loan agreements for approved applications                            |
| `INVALID_LOAN_AGREEMENT_ID`        | `LOAN_AGREEMENT_ERROR`  | `400`      | The loan\_agreement\_id specified is invalid                                         |
| `LOAN_AGREEMENT_NOT_FOUND`         | `LOAN_AGREEMENT_ERROR`  | `404`      | The loan agreement resource does not exist                                           |
| `LOAN_AGREEMENT_CANNOT_BE_SIGNED`  | `LOAN_AGREEMENT_ERROR`  | `400`      | The loan agreement's status must be pending\_signature in order to sign it           |
| `INVALID_APPLICATION_ID`           | `APPLICATION_ERROR`     | `400`      | The application\_id specified is invalid                                             |
| `INVALID_BORROWER_ID`              | `BORROWER_ERROR`        | `400`      | The borrower\_id specified is invalid                                                |
| `BORROWER_NOT_FOUND`               | `BORROWER_ERROR`        | `404`      | The borrower resource does not exist                                                 |
| `APPLICATION_CANNOT_BE_REJECTED`   | `APPLICATION_ERROR`     | `400`      | The application's status must be pending in order to reject it                       |
| `APPLICATION_CANNOT_BE_APPROVED`   | `APPLICATION_ERROR`     | `400`      | The application's status must be pending in order to approve it                      |
| `APPLICATION_NOT_FOUND`            | `APPLICATION_ERROR`     | `404`      | The application resource does not exist                                              |
| `DUPLICATE_SSN`                    | `BORROWER_ERROR`        | `400`      | A borrower with that SSN already exists                                              |
| `DUPLICATE_EIN`                    | `BORROWER_ERROR`        | `400`      | A borrower with that EIN already exists                                              |
| `INTERNAL_SERVER_ERROR`            | `API_ERROR`             | `500`      | An unexpected error occurred                                                         |
| `FACILITY_ALREADY_EXISTS`          | `FACILITY_ERROR`        | `400`      | A facility already exists for this loan agreement                                    |
| `FACILITY_CANNOT_BE_CREATED`       | `FACILITY_ERROR`        | `400`      | The loan agreement must have a status of signed in order to create a facility for it |
| `FACILITY_NOT_FOUND`               | `FACILITY_ERROR`        | `404`      | The facility resource does not exist                                                 |
| `INVALID_FACILITY_ID`              | `FACILITY_ERROR`        | `400`      | The facility\_id specified is invalid                                                |
| `FACILITY_CANNOT_BE_CLOSED`        | `FACILITY_ERROR`        | `400`      | The facility is already closed                                                       |