Enhanced unit-based Prepaid with Drawdown (PPDD) allows you to pre-purchase usage units for a term and consume them over time, with support for top-ups and overage charges when usage exceeds the prepaid balance.

Prepaid with Drawdown is a pricing model for consumption-based services, such as data storage. With this model, your customers purchase a predefined quantity of units in advance for a specified term, such as a month or a year. Usage is deducted from the prepaid balance during the term. Your customers can purchase additional units through top-ups or incur overage charges when usage exceeds the prepaid amount.

To view this option, ensure that the Prepaid with Drawdown feature is enabled in the Feature Management screen (Settings > Billing Settings > Manage Features.