Adding Fields to Standard Screen

Hi All,

Need your suggestion.

I have to add few new Fields to the Standard screen of TCode : CMS_WB (SAP Banking)

Is there anything that could be done in config where new fields could be added?

How does it work out in traditional SAP modules?

How do we add a new field to transaction say VA01?

Or do we have to create a Z screen.

Please let meknow.

reagrds,