SAP Message AH339 - Field &1 from accounts receivable and payable is not filled

Diagnosis The field &v1& from accounts receivable and payable is not filled. System Response It has been determined in part 1 of module ISU_BILLING_PREPARE_UPDATEthat field &v1& is not filled. &v1& must be filled in function moduleISU_DB_GET_HVORG_FOR_BILLING in ISU_TRIGGER_BILLABLE_CHECK. Procedure V1 must be maintained in accounts receivable and payable in tableTFKHVO via the entries VABR, SABR and MABR.