In ABAP transactions if we enter wrong input in the screen fields then error message is displayed(Assume I have coded exception handling), then screen fields are disabled. We cannot change entered input or cannot enter new input.What my doubt is, Is there any way to re-enable the screen for new entry or to rectify the entries. If so please provide me a example and where to place the logic in prog ( I mean in which event PBO or PAI). Thanks in advance.Waiting for answers from Mods and techies.....