# BillingAttachFreeTrial


## Fields

| Field                                                                                | Type                                                                                 | Required                                                                             | Description                                                                          |
| ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------ |
| `duration_length`                                                                    | *float*                                                                              | :heavy_check_mark:                                                                   | N/A                                                                                  |
| `duration_type`                                                                      | [Optional[models.BillingAttachDurationType]](../models/billingattachdurationtype.md) | :heavy_minus_sign:                                                                   | N/A                                                                                  |
| `card_required`                                                                      | *Optional[bool]*                                                                     | :heavy_minus_sign:                                                                   | N/A                                                                                  |