You can store a detailed billing plan instead of a single billing date at item level in the sales document during order processing.
The billing plan specifies the time at which the given amount or percentage rate should be billed. This form of invoice creation plays an important role, for example, in settling rental contracts on a periodic basis and in milestone billing for projects with predefined billing dates.
Each billing plan has a unique billing plan number which is assigned internally by the system.
The following sections describe the settings in Customizing for the billing plan.