Exception-Value
If a numeric value different from "0" is set for this property and the 
Notify-Selchange style is set, an exception condition for the active screen is generated when the value of the List-Box control is modified.
 
Example - Define a list-box with a exception-value
screen section ...   03 screen-1-lb-1 List-Box      line 5.7      column 3.1      size 34.6 cells       lines 15.5 cells       id 1      exception-value 201      .  |