I have to add a new tab 'Billing Plan' at sales order header level.
As per my functional person, If I modify TVAK-FPART field with some value than tab will be come.
I tried to modify TVAK-FPART field in debug mode and was able to see the tab, BUT when I again came back to
VA03/VA03 transaction then that tab was not there.
Pls help me to resolve this problem..