Hi Imran and All,

Let us make this very very simple.

We will make a UI Policy with this condition :

here manufacture_date is the field which I'm checking if a past date is not entered. Replace it with your own variable name.

And now we just write a 2 line code in the "Script" part of the same UI Policy :

And that's it guys. We are good to go. We need not use any client scripts because for form validations the best practice is to use UI Policies. Using client scripts would have performance issues.

Please let me know if you have further doubts.

Thanks,

Arnab