An expression on line number of the report-specification file contains a division operation. At some point in the report run, the divisor in the expression was zero. Examine the expression and the data it uses and write the report so that division by zero will not occur (for example, by testing for zero in an IF statement). This error can result from applying an aggregate function to a defined variable before the first row of data is processed. To avoid this situation, make sure that any variable has a value before it is used (for example, by setting it from a command-line parameter or with a PROMPT FOR statement).