# paypal.purchaseUnits

> Replaces the single purchase unit Merx sends to PayPal, for example to list every item.

- Source: `config/config.php#L34` <https://github.com/wagnerwagner/merx/blob/2.0.0-alpha.11/config/config.php#L34>

```php
'wagnerwagner.merx.paypal.purchaseUnits' => function (): array {},
```

## Default value

```php
fn (): array => []
```

## Type

`function`