SAP Message BEA_LCB000 - Due list item &1 for transaction &2 incomplete due to rejection

Diagnosis The billing feature Scheduled Billing Without Request Items isactive and a billed due list item is to be rejected. System Response The system could not reject the due list item automatically. Instead thedue list item was set to Incomplete. Procedure You need to reject the incomplete due list item. On the SAP EasyAccess screen, choose Sales/Service -> Billing -> RejectIncomplete Billing Due List.