SAP Message AH116 - Supplier calorific value date &1 in table &2 is zero

Diagnosis When the billing calorific value is determined, the table CalorificValues per Calorific Value District is read. The system hasestablished that the calorific value entered in this table is notplausible. Normal limits: 9 to 13 or 3 to 60 (unit of measurement:KWH/M3) System Response Procedure Correct your entries or maintain the table mentioned above.