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

# TransferError.Unknown

> Kotlin Data Class

**Data Class**

```kotlin theme={null}
data class Unknown(val message: String, val cause: Throwable? = null) : TransferError
```

## Constructors

```kotlin theme={null}
constructor(message: String, cause: Throwable? = null)
```

## Properties

| Property  | Type                | Description                                         |
| --------- | ------------------- | --------------------------------------------------- |
| `cause`   | `Throwable?`        | -                                                   |
| `code`    | `TransferErrorCode` | Stable, machine-readable identifier for this error. |
| `message` | `String`            | -                                                   |