how to stop further processing when condition fail at window level

Hi Frds,

There is a standard functionality when creating new transaction type, pop up option open and user able to select any transaction type and then corresponding view config get launch.

Technically Pop Up window populate in One component and when user select transaction type control transfer to another component.

Question:

I have inserted some validation in the Window level( second component) i.e. in do_prepare_output method. My question is how can i revert back to the first screen when condition get fail.

Please advice.

Thanks,

Rajan