# CreatePlanRolloverRequest Rollover config for unused units. If set, unused included units carry over. ## Fields | Field | Type | Required | Description | | ---------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- | | `max` | *Optional[float]* | :heavy_minus_sign: | Max rollover units. Omit for unlimited rollover. | | `expiry_duration_type` | [models.CreatePlanExpiryDurationTypeRequest](../models/createplanexpirydurationtyperequest.md) | :heavy_check_mark: | When rolled over units expire. | | `expiry_duration_length` | *Optional[float]* | :heavy_minus_sign: | Number of periods before expiry. |