Hi Ramalingeshwar Reddy, 

What do you mean about screen A has to access screen B, it is no clear, can you explain? 

If it is A accessing B through an action check bellow link

https://itnext.io/how-to-perform-redirects-to-webscreens-in-the-on-application-ready-system-event-in-outsystems-38c664f4f181

https://www.outsystems.com/forge/component-overview/18132/auto-custom-redirect-o11

Regards, 

Hi,

If your question is like you need to access screen B from screen A. Then answer is very simple in outsystems you can use link or buttons  in screen A and  in destination. Prpperty of button or link set destination screen B.

Thanks

CV

Você pode utilizar parâmetros de entrada para enviar informações de uma tela para outra, ou acessar através de links e definir a URL ou destino da outra página.