| Name | Type | Description | Notes |
|---|---|---|---|
| accountId | String | User's account ID. | [optional] |
| phoneNumber | String | Toll-free telephone number in E.164 format. | [optional] |
| status | TfvCallbackStatusEnum | [optional] | |
| internalTicketNumber | String | Unique identifier (UUID) generated by Bandwidth to assist in tracking the verification status of a toll-free number. | [optional] |