Hey Pallavi,

You'll probably need to use JavaScript to detect that the browser is closing and call an action there, using the $actions predefined object.

Here's a forum thread that may help you: https://www.outsystems.com/forums/discussion/71304/invoke-a-client-action-when-browser-tab-closes/

Here's a step-by-step tutorial on how to do it: https://success.outsystems.com/Documentation/11/Extensibility_and_Integration/JavaScript/Extend_Your_Mobile_and_Reactive_Apps_Using_JavaScript

Cheers

Add  below code on your url open button and try this 

var win =  window.open($parameters.RedirectionLink,"_blank");

var timer = setInterval(function(){if(win.closed){  

    clearInterval(timer);  

    setTimeout(function CallYourFunction() {

        $actions.CloseAndSaveData() // this is the client action 

    }, 2000);

}},500);

Hi Pallavi,

Add below JavaScript on onReady event of you screen.

window.addEventListener("beforeunload", function(event){

$action.Saveinputdata();

});

you can write save data logic in "Saveinputdata" action.

Hope this helps.

Shoeb