# FailedToFindTransactionError | @aa-sdk/core

> Represents an error that occurs when a transaction cannot be found for a given user operation. This error extends from `BaseError`. The `hash` of the transaction is provided to indicate which transaction could not be found.

> For the complete documentation index, see [llms.txt](/docs/llms.txt).

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Defined in: [aa-sdk/core/src/errors/transaction.ts:20](https://github.com/alchemyplatform/aa-sdk/blob/main/aa-sdk/core/src/errors/transaction.ts#L20)

Represents an error that occurs when a transaction cannot be found for a given user operation. This error extends from `BaseError`. The `hash` of the transaction is provided to indicate which transaction could not be found.

## Extends

- [`BaseError`](BaseError)

## Constructors

### Constructor

```ts
new FailedToFindTransactionError(hash): FailedToFindTransactionError;
```

Defined in: [aa-sdk/core/src/errors/transaction.ts:28](https://github.com/alchemyplatform/aa-sdk/blob/main/aa-sdk/core/src/errors/transaction.ts#L28)

Constructs a new error message indicating a failure to find the transaction for the specified user operation hash.

#### Parameters

<table>
  <thead>
    <tr>
      <th align="left">Parameter</th>
      <th align="left">Type</th>
      <th align="left">Description</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>
        `hash`
      </td>

      <td>
        `` `0x${string}` ``
      </td>

      <td>
        The hexadecimal value representing the user operation hash.
      </td>
    </tr>

  </tbody>
</table>

#### Returns

`FailedToFindTransactionError`

#### Overrides

[`BaseError`](BaseError).[`constructor`](BaseError#constructor)

## Properties

<table>
  <thead>
    <tr>
      <th align="left">Property</th>
      <th align="left">Type</th>
      <th align="left">Default value</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>
        <a id="name" /> `name`
      </td>

      <td>
        `string`
      </td>

      <td>
        `"FailedToFindTransactionError"`
      </td>
    </tr>

    <tr>
      <td>
        <a id="version" /> `version`
      </td>

      <td>
        `string`
      </td>

      <td>
        `VERSION`
      </td>
    </tr>

  </tbody>
</table>