A4GL-MAX-DATE sets the maximum allowable date for your data source. Because there are so many different databases and drivers available, and no standards about what the maximum allowable date for a Date-type variable, this configuration variable can be used to check for illegal dates. Set the variable to an 8-digit number which signifies the maximum allowable date, in the format YYYYMMDD.
The default date for A4GL-MAX-DATE is 20991231.