Hi Karthik,
As your snapshot, the error message is being shown because it has total hours more than 24 hrs.
User have to correct data to make it less than or equal to 24.
I think your issue is :
System is showing error message when user presses save button... this case ok
Now, user tries to correct data by clicking on particular cell ( link to action ) but system again throws error message,..... this is the issue
so that no popup is shown to correct data.
To resolve the issue: Perform validation only during SAVE action
case lo_action->name.
when 'SAVE'.
" Raise error message here / your validation logic goes here
when others.
endcase.
Regards,
Rama