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

# Overrides

The overrides for a contract transaction.

## Extends

* `Omit`\<[`TransactionRequest`](/sdk/content/type-aliases/TransactionRequest), `"to"` | `"data"`>

## Properties

| Property   | Type                                                               | Description                                                | Inherited from |
| :--------- | :----------------------------------------------------------------- | :--------------------------------------------------------- | :------------- |
| `chainId?` | `null` \| [`BigNumberish`](/sdk/content/type-aliases/BigNumberish) | The chain ID for the network this transaction is valid on. | `Omit.chainId` |
| `type?`    | `null` \| `number`                                                 | The transaction type. Quai transactions are always type 0. | `Omit.type`    |