## Integrated Pre-Authorisation — Closing & Voiding

## Closing a Pre-Authorisation

Closing a pre-auth finalises the transaction and charges the customer the specified amount.

### Event-Based Method


```c#
IPreAuthCompletionResult ClosePreAuth(
  string completionReference,
  int amount,
  string? merchantID = null,
  string? terminalID = null
)
```

### Task-Based Method


```c#
Task<IPreAuthCompletionResult> ClosePreAuthAsync(
  string completionReference,
  int amount,
  string? merchantID = null,
  string? terminalID = null
)
```

## Voiding a Pre-Authorisation

Voiding a pre-auth releases the hold on the customer’s funds without charging them.

### Event-Based Method


```c#
IPreAuthCompletionResult VoidPreAuth(
  string completionReference,
  string? merchantID = null,
  string? terminalID = null
)
```

### Task-Based Method


```c#
Task<IPreAuthCompletionResult> VoidPreAuthAsync(
  string completionReference,
  string? merchantID = null,
  string? terminalID = null
)
```

Closing or voiding a pre-authorisation does not require the terminal to be connected.