# Payment Balance Activity Free Processing Detail

## Structure

`PaymentBalanceActivityFreeProcessingDetail`

## Fields

| Name | Type | Tags | Description |
|  --- | --- | --- | --- |
| `paymentId` | `string \| null \| undefined` | Optional | The ID of the payment associated with this activity. |

## Example (as JSON)

```json
{
  "payment_id": "payment_id8"
}
```