Hi Krishna,
You can add js as web Resource and add it to tab OnChange event.
Here are steps.
1.Go Settings > Customization > Customize the System > Web Resource to click new button.
js code:
function FormLevelNotification(executionContext) {
var formContext = executionContext.getFormContext();
formContext.ui.setFormNotification("Example of an ERROR notification. ", "ERROR");
formContext.ui.setFormNotification("Example of a WARNING notification. ", "WARNING");
formContext.ui.setFormNotification("Example of an INFORMATION notification.", "INFO");
}
2.Go Settings > Customization > Customize the System > Entities > Forms.
(1) open one main form and click Form Properties to open a dialog.
(2) click Add button to add js that just created.
(3) Under Event Handlers, select ‘Summary’ as control and add the js, then double-clcik it to open Handler Properties dialog.
3.Save and publish.
4.Test.
