Use

You must cancel a billing request if the items in it are not to be billed or if they should be made available for a new billing request to be created.

For technical reasons, cancellation is not possible. However, you can provide the items with a reason for rejection. These items are not taken into account for the current billing, and are available for the next billing if they have an appropriate reason for rejection. This means that if you "cancel" values from a dynamic item , which have been billed already (for example, amount or quantity), then these values are displayed in the To be billed column in the expenditure view the next time you bill.

Activities

You can define the reasons for rejection in Customizing for Sales and Distribution under  Sales Sales Documents Sales Document Item Define Reasons for Rejection (see also System Settings ).