Help reqd on MIRO - Screen variant name to get INVFO-WRBTR

Hi all,

I want to know the exact std screen variant name in SHD0,to get the amount field to make it as required one.(To Tick).

I've created a new transaction variant with 'Z'... there i got the field name of MIRO as "INVFO-WRBTR"...and i marked it as required.So with the help of my new Z Tcode(ZMIRO)...im getting the screen as per my requirement....But i want to assign it for MIRO thru screen variant...where we'll have the std variant names.

So,pls post ur comments with the exact screen variant name for my amount field.

thanks & regards

sankar.