SAP Message BEA551 - Unable to determine item category for BDL item &1 for transaction &2

Diagnosis The system was unable to determine the item category on the basis ofthe data specified for the item due for billing. This is either becausedata is missing in the item in question, or because the settings madefor data determination in Customizing are incorrect. System Response Billing due list item &V1& of transaction &V2& is not copied to thebilling due list. Procedure Contact your system administrator. Procedure for System Administration Check the Customizing settings in the section forItem Category Determination.